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        <RelatedOrExemptFuncIncomeAmt>38923911</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>OTHER PATIENT REVENUES</Desc>
        <BusinessCd>621400</BusinessCd>
        <TotalRevenueColumnAmt>74936</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>74936</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>TRANSFER FROM RESTRICTED FUNDS</Desc>
        <BusinessCd>621400</BusinessCd>
        <TotalRevenueColumnAmt>578581</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>578581</RelatedOrExemptFuncIncomeAmt>
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      <TotalProgramServiceRevenueAmt>39577428</TotalProgramServiceRevenueAmt>
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        <ExclusionAmt>442337</ExclusionAmt>
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      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
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      </RoyaltiesRevenueGrp>
      <RentalIncomeOrLossGrp>
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        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
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      </NetRentalIncomeOrLossGrp>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>221100</TotalRevenueColumnAmt>
        <ExclusionAmt>221100</ExclusionAmt>
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      </NetIncmFromFundraisingEvtGrp>
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      <GamingDirectExpensesAmt>0</GamingDirectExpensesAmt>
      <NetIncomeFromGamingGrp>
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      </NetIncomeFromGamingGrp>
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      <NetIncomeOrLossGrp>
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      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER INCOME</Desc>
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        <RelatedOrExemptFuncIncomeAmt>1633</RelatedOrExemptFuncIncomeAmt>
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        <ExclusionAmt>663437</ExclusionAmt>
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      <GrantsToDomesticOrgsGrp>
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      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
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      <BenefitsToMembersGrp>
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      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>0</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
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      <CompDisqualPersonsGrp>
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      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>2665273</ProgramServicesAmt>
        <ManagementAndGeneralAmt>126889</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>1729776</ProgramServicesAmt>
        <ManagementAndGeneralAmt>82352</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
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      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
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        <ManagementAndGeneralAmt>1035</ManagementAndGeneralAmt>
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      <FeesForServicesAccountingGrp>
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        <ManagementAndGeneralAmt>53727</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
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      </FeesForServicesLobbyingGrp>
      <FeesForServicesProfFundraising>
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      </FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
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      <InformationTechnologyGrp>
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        <ProgramServicesAmt>561690</ProgramServicesAmt>
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      </TravelGrp>
      <PymtTravelEntrtnmntPubOfclGrp>
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      <ConferencesMeetingsGrp>
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      <InterestGrp>
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      <PaymentsToAffiliatesGrp>
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      <InsuranceGrp>
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      <OtherExpensesGrp>
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      <OtherExpensesGrp>
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      <TotalFunctionalExpensesGrp>
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        <ProgramServicesAmt>34096574</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3333331</ManagementAndGeneralAmt>
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      <CashNonInterestBearingGrp>
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        <EOYAmt>9356997</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
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      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
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      <ReceivablesFromOfficersEtcGrp>
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      <OthNotesLoansReceivableNetGrp>
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        <EOYAmt>0</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
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        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
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        <ContributorUSAddress>
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    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
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      <OtherLiabilitiesOrgGrp>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S FINANCIAL STATEMENTS DID NOT REPORT A LIABILITY FOR UNCERTAIN TAX POSITIONS UNDER FIN 48.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
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        <OtherCompensationRltdOrgsAmt>42000</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>248978</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>30707</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>1368927</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Timothy O'Connor</PersonNm>
        <TitleTxt>Trustee/Officer/EVP CFO &amp; Trea</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>579748</CompensationBasedOnRltdOrgsAmt>
        <OtherCompensationRltdOrgsAmt>39578</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>156600</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>28744</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>804670</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>David G Spackman JD</PersonNm>
        <TitleTxt>Trustee/Officer/SVP Gov Affair</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>412789</CompensationBasedOnRltdOrgsAmt>
        <OtherCompensationRltdOrgsAmt>17200</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>28978</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>23181</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>482148</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>elizabeth p conrad</PersonNm>
        <TitleTxt>Svp chief hr officer</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>341701</CompensationBasedOnRltdOrgsAmt>
        <OtherCompensationRltdOrgsAmt>22200</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>28978</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>28623</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>421502</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>jennifer c gizmunt</PersonNm>
        <TitleTxt>SVP &amp; COO LH CONTINUING CARE</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>206862</CompensationBasedOnRltdOrgsAmt>
        <BonusRelatedOrganizationsAmt>15000</BonusRelatedOrganizationsAmt>
        <OtherCompensationRltdOrgsAmt>18550</OtherCompensationRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>29863</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>270275</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>deborah costello</PersonNm>
        <TitleTxt>EXEC DIR NE HOME</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>157757</CompensationBasedOnRltdOrgsAmt>
        <BonusRelatedOrganizationsAmt>25000</BonusRelatedOrganizationsAmt>
        <OtherCompensationRltdOrgsAmt>6500</OtherCompensationRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>4183</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>193440</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>suzanne olszak</PersonNm>
        <TitleTxt>rn weekend coordinator</TitleTxt>
        <BaseCompensationFilingOrgAmt>156253</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>6500</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>11682</OtherCompensationFilingOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>27185</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>201620</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>cynthia ring</PersonNm>
        <TitleTxt>RN TEAM RESOURCE</TitleTxt>
        <BaseCompensationFilingOrgAmt>129833</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>5450</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>13000</OtherCompensationFilingOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>2366</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>150649</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>David Reis</PersonNm>
        <TitleTxt>SVP Chief Info Officer</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>273180</CompensationBasedOnRltdOrgsAmt>
        <BonusRelatedOrganizationsAmt>27625</BonusRelatedOrganizationsAmt>
        <OtherCompensationRltdOrgsAmt>17901</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>18830</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>3004</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>340540</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CONNIE WOODWORTH</PersonNm>
        <TitleTxt>OFFICER/VP FINANCE NHS</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>197858</CompensationBasedOnRltdOrgsAmt>
        <BonusRelatedOrganizationsAmt>15000</BonusRelatedOrganizationsAmt>
        <OtherCompensationRltdOrgsAmt>31796</OtherCompensationRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>1465</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>246119</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL L HAMAKER</PersonNm>
        <TitleTxt>COO LAHEY HEALTH AT HOME</TitleTxt>
        <BaseCompensationFilingOrgAmt>140899</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>25000</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>13900</OtherCompensationFilingOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>25891</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>205690</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>INDEPENDENT MEMBERS OF THE LAHEY HEALTH SYSTEM, INC. ("LHS") BOARD OF TRUSTEES COMPRISE THE COMPENSATION COMMITTEE. THE COMMITTEE SETS THE COMPENSATION AND BENEFITS FOR THE CEO. THE COMMITTEE SEEKS THE ADVICE OF EXTERNAL COMPENSATION CONSULTANTS. COMPARABILITY DATA IS PROVIDED, ANALYZED AND DOCUMENTED BY THE EXTERNAL CONSULTANTS. LHS AND ITS RELATED ORGANIZATIONS' SENIOR VP AND CHIEF HUMAN RESOURCES OFFICER PROVIDES THE COMMITTEE WITH ANY REQUESTED INFORMATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>LHS AND ITS RELATED ORGANIZATIONS MAINTAIN A 457F NONQUALIFIED DEFERRED COMPENSATION PLAN AND A SPLIT DOLLAR LIFE INSURANCE PLAN FOR CERTAIN PHYSICIANS, EXECUTIVE MANAGEMENT AND DEFINED MEDICAL STAFF. THE PLANS OFFER PARTICIPATING EMPLOYEES AN ANNUAL DEFERRAL OF COMPENSATION IN ADDITION TO THEIR SALARIES. FOR THE CURRENT PERIOD, THE FOLLOWING INDIVIDUALS PARTICIPATED IN THE 457F NONQUALIFIED DEFERRED COMPENSATION PLAN AND/OR THE SPLIT DOLLAR LIFE INSURANCE PLAN: HOWARD R. GRANT, J.D., M.D. $220,000 TIMOTHY O'CONNOR $121,600</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>The non-fixed payment bonuses reported in Schedule J, Part II, column (b)(ii) are determined by THE compensation committee, which includes Trustees. In a subjective manner, the committee takes into account the achievements of both the organization and the individual to determine the appropriate amount of such bonuses, which include, but not limited to, the organization meeting its corporate goalS; FINANCIAL PERFORMANCE MEASURES AND QUALITY MEASURES (such as patient satisfaction and quality of CARE).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II</FormAndLineReferenceDesc>
        <ExplanationTxt>LHS AND ITS RELATED ORGANIZATIONS DO NOT COMPENSATE ANY TRUSTEE OR OFFICER IN THEIR CAPACITY AS TRUSTEE OR OFFICER. ALL COMPENSATION PAID IS FOR WORK PERFORMED IN THEIR CAPACITY OTHER THAN TRUSTEE OR OFFICER, WHICH IS LISTED ON FORM 990, PART VII, DIRECTLY FOLLOWING THE TITLE OF TRUSTEE AND/OR OFFICER.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>LAHEY HEALTH SYSTEM, INC. IS IN CONTACT WITH FEDERAL AND STATE LEGISLATORS REGARDING HEALTH CARE REFORM ISSUES THAT WOULD POTENTIALLY HAVE AN IMPACT ON THE ORGANIZATION AND ITS RELATED ORGANIZATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 11F AND SCHEDULE D, PART X, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S FINANCIAL STATEMENTS DID NOT REPORT A LIABILITY FOR UNCERTAIN TAX POSITIONS UNDER FIN 48.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6, 7A, &amp; 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOLE CORPORATE MEMBER OF THE REPORTING ORGANIZATION IS LAHEY HEALTH SYSTEM, INC. THE REPORTING ORGANIZATIONS MEMBER HAS, WITH RESPECT TO THE REPORTING ORGANIZATION, THE RIGHT TO EXERCISE ALL POWERS CONFERRED ON MEMBERS OF THE NON-PROFIT CORPORATIONS UNDER MASSACHUSETTS GENERAL LAWS CHAPTER 180, INCLUDING, WITHOUT LIMITATION, POWERS WITH RESPECT TO THE FOLLOWING: (A) APPOINTMENT AND REMOVAL OF MEMBERS OF BOARD OF TRUSTEES; (B) AMENDMENT OF THE ARTICLES OF ORGANIZATION; (C) AMENDENT OF THE BY-LAWS; (D) THE SALE, LEASE, EXCHANGE OR OTHER DISPOSITION OF ALL OR SUBSTQANTIALLY ALL OF THE CORPORATIONS ASSETS; AND (E) THE MERGER OR CONSOLIDATION WITH ANOTHER CORPORATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11:</FormAndLineReferenceDesc>
        <ExplanationTxt>MANAGEMENT PREPARED THE IRS FORM 990 ALONG WITH INDEPENDENT TAX CONSULTANTS WHO SIGN THE RETURN AS A PAID PREPARER. PRIOR TO THE FILING DATE, A DRAFT OF THE IRS FORM 990 WAS PROVIDED TO THE ENTIRE BOARD OF TRUSTEES VIA A SECURED WEBSITE. IN ADDITION, THE FINAL FORM 990 WAS PROVIDED TO THE ENTIRE BOARD OF TRUSTEES VIA THE SAME SECURED WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL OFFICERS, TRUSTEES, KEY EMPLOYEES, PHYSICIANS, AND MANAGEMENT EMPLOYEES AT ALL LEVELS, ARE REQUIRED TO COMPLETE AN ANNUAL CONFLICT OF INTEREST DISCLOSURE FORM. THE LHS CORPORATE COMPLIANCE DEPARTMENT MONITORS AND REVIEWS EACH DISCLOSURE FOR COMPLIANCE WITH THE CONFLICT OF INTEREST THROUGH DISCLOSURE SOFTWARE, TRAINING, AND INDIVIDUAL REVIEWS WITH PHYSICIANS, KEY EMPLOYEES, AND MANAGERS. DEPENDING ON THE CONFLICT OF INTEREST, A PERSON COULD BE ASKED TO NOT PARTICIPATE IN DECISIONS MADE ON BEHALF OF LAHEY HEALTH SYSTEMS, INC AND AFFILIATES; A PERSON MAY BE TOLD THEY CANNOT BE A PRINCIPAL INVESTIGATOR ON A RESEARCH STUDY; A PERSON MAY BE TOLD THEY CANNOT PERFORM THE TASK THAT CREATES THE CONFLICT; A PERSON COULD BE ASKED TO REMOVE THEMSELVES FROM A COMMITTEE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 14</FormAndLineReferenceDesc>
        <ExplanationTxt>LAHEY HEALTH SYSTEM, INC. AND AFFILIATES HAVE A WRITTEN DOCUMENT RETENTION AND DESTRUCTION POLICY KNOWN AS THE "RETENTION OF ADMINISTRATIVE AND CLINICAL DOCUMENTS". THE REVISED "RETENTION OF ADMINISTRATIVE AND CLINICAL DOCUMENTS" POLICY WAS APPROVED BY THE MEDICAL PRACTICE AND UTILIZATION COMMITTEE ON JULY 26 2012.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>INDEPENDENT MEMBERS OF THE BOARD OF TRUSTEES COMPRISE THE COMPENSATION COMMITTEE. THE COMMITTEE SETS THE COMPENSATION AND BENEFITS FOR THE CEO AND ALSO REVIEWS AND APPROVES RECOMMENDATIONS FOR THE COMPENSATION AND BENEFITS FOR DISQUALIFIED INDIVIDUALS AND OTHERS. THE COMMITTEE SEEKS THE ADVICE OF THE EXTERNAL COMPENSATION CONSULTANTS. COMPARABILITY DATA IS PROVIDED, ANALYZED, AND DOCUMENTATED BY THE EXTERNAL CONSULTANTS. THE LHS SENIOR VP AND CHIEF HUMAN RESOURCES OFFICER PROVIDES THE COMMITTEE WITH ANY REQUESTED INFORMATION. THE COMMITTEE MET SEVERAL TIMES THIS YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S GOVERNING DOCUMENTS AND AUDITED FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST. THE ORGANIZATION'S CONFLICT OF INTEREST POLICY AND OTHER COMPLIANCE POLICIES ARE MADE AVAILABLE TO THE PUBLIC VIA THE ORGANIZATION'S WEBSITE. IN ADDITION, THE ORGANIZATION PRESENTS FINANCIAL INFORMATION TO THE PUBLIC AS AN ATTACHMENT TO ITS MASSACHUSETTS OFFICE OF THE ATTORNEY GENERAL FORM PC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART VII, SECTION A:</FormAndLineReferenceDesc>
        <ExplanationTxt>LAHEY HEALTH SYSTEM, INC. AND ITS RELATED ORGANIZATIONS DO NOT COMPENSATE ANY TRUSTEE AND/OR OFFICER IN THEIR CAPACITY AS A TRUSTEE AND/OR OFFICER. ALL COMPENSATION PAID IS FOR WORK PERFORMED IN THE EMPLOYEE'S JOB TITLE, WHICH IS LISTED ON FORM 990, PART VII, DIRECTLY FOLLOWING THE TITLE OF "TRUSTEEOR "OFFICER".</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII, SECTION B, LINE 1 &amp; 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>LAHEY HEALTH SHARED SERVICES, INC. ("LHSS") COMPENSATES (PRCOESSES PAYMENT) ALL INDEPENDENT CONTRACTORS (VENDORS) ON BEHALF OF THE LAHEY HEALTH SYSTEM, INC. FAMILY OF ORGANIZATIONS. UNDER ITS TAX ID NUMBER, LHSS ISSUES FORM 1099 TO THE INDEPENDENT CONTRACTORS. IN ADDITION, IT SUBMITS THE SAME INFORMATION TO THE INTERNAL REVENUE SERVICE. THE LAHEY HEALTH SYSTEM INC. FAMILY OF ORGANIZATIONS REIMBUrSES LHSS FOR ALL VENDOR PAYMENTS MADE EITHER DIRECTLY OR INDIRECTLY ON THEIR BEHALF.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER CHANGES IN NET ASSETS OR FUND BALANCES: TRANSFER OF NET ASSETS: $926,230 *VNAME BEGINNING UNRESTRICTED NET ASSETS: $25,417,740 **VNAME TEMPORARY RESTRICTED NET ASSETS: $ 3,419,658 ------------ TOTAL: $29,764,228 *VISITING NURSES ASSOCIATION OF MIDDLESEX-EAST ("VNAME") MERGED WITH NORTHEAST PROFESSIONAL REGISTRY OF NURSES ("NPRN") ON JANUARY 1, 2017 AND ALL BALANCES AS OF DECEMBER 31, 2016 WERE TRANSFERRED TO NPRN. **VNAME BEGINNING TEMPORARILY RESTRICTED NET ASSET BALANCE: $3,687,510 NET ASSETS RELEASED TO P&amp;L: ($194,457) DONATIONS TO TEMPORARILY RESTRICTED NET ASSETS: $30,452 CHANGE IN MARKET VALUE: ($103,847) ----------- ENDING BALANCE: $3,419,658</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE D, PART V, LINE 1B</FormAndLineReferenceDesc>
        <ExplanationTxt>$3,687,510 IN CONTRIBUTIONS IS THE 12/31/16 BALANCE BROUGHT OVER FROM VISITING NURSING ASSOC OF MIDDLESEX EAST (VNAME).</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>Lahey health system inc</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 MALL RD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>611665701</EIN>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>12C</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>Lahey Clinic Foundation Inc</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 MALL RD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>042323457</EIN>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>LAHEY CLINIC HOSPITAL INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 MALL RD</AddressLine1Txt>
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          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>042704686</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>LCF</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>LAHEY CLINIC INC</BusinessNameLine1Txt>
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          <AddressLine1Txt>41 MALL RD</AddressLine1Txt>
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          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>042704683</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>LCF</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>LAHEY HEALTH SHARED SERVICES INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 MALL RD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>043178972</EIN>
        <PrimaryActivitiesTxt>ADMIN SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>LAHEY PHYSICIAN COMMUNITY ORGANIZATION I</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 MALL ROAD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>472248298</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>WINCHESTER HEALTHCARE MANAGEMENT INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
          <CityNm>WINCHESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>222701817</EIN>
        <PrimaryActivitiesTxt>MGMT SERVICES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>WINCHESTER HOSPITAL FOUNDATION INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
          <CityNm>WINCHESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>043399570</EIN>
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        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>WINCHESTER HOSPITAL</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
          <CityNm>WINCHESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>042104434</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>WINCHESTER COMMUNITY ACCT CARE Org</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
          <CityNm>WINCHESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>223137856</EIN>
        <PrimaryActivitiesTxt>ACO</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12A</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>VISITING NURSE ASSOC OF MIDDLESEX-EAST</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>607 NORTH AVENUE</AddressLine1Txt>
          <CityNm>WAKEFIELD</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01880</ZIPCd>
        </USAddress>
        <EIN>046151873</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>COMMUNITY CARE INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>607 NORTH AVENUE</AddressLine1Txt>
          <CityNm>WAKEFIELD</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01880</ZIPCd>
        </USAddress>
        <EIN>900396973</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NORTHEAST HOSPITAL CORPORATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>85 HERRICK STREET</AddressLine1Txt>
          <CityNm>BEVERLY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01915</ZIPCd>
        </USAddress>
        <EIN>042121317</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NORTHEAST MEDICAL PRACTICE</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>85 HERRICK STREET</AddressLine1Txt>
          <CityNm>BEVERLY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01915</ZIPCd>
        </USAddress>
        <EIN>043201853</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NHC</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NORTHEAST BEHAVIORAL HEALTH CORPORATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>199 ROSEWOOD DRIVE SUITE 250</AddressLine1Txt>
          <CityNm>DANVERS</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01923</ZIPCd>
        </USAddress>
        <EIN>042777145</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>HES HOUSING SERVICES INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>199 ROSEWOOD DRIVE SUITE 250</AddressLine1Txt>
          <CityNm>DANVERS</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01923</ZIPCd>
        </USAddress>
        <EIN>223232914</EIN>
        <PrimaryActivitiesTxt>HUD HOUSING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NBH</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CAB HEALTH &amp; RECOVERY SERVICES INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>199 ROSEWOOD DRIVE SUITE 250</AddressLine1Txt>
          <CityNm>DANVERS</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01923</ZIPCd>
        </USAddress>
        <EIN>042400270</EIN>
        <PrimaryActivitiesTxt>SUBSTANCE ABU</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NBH</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NORTHEAST SENIOR HEALTH CORPORATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>85 HERRICK STREET</AddressLine1Txt>
          <CityNm>BEVERLY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01915</ZIPCd>
        </USAddress>
        <EIN>042731137</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>SEACOAST NURSING &amp; REHABILITATION CENTER</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>300 WASHINGTON STREET</AddressLine1Txt>
          <CityNm>GLOUCESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01930</ZIPCd>
        </USAddress>
        <EIN>041305001</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ADDISON GILBERT SOCIETY INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>41 MALL ROAD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <EIN>464371382</EIN>
        <PrimaryActivitiesTxt>SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NORTHEAST HEALTH SYSTEM INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>85 HERRICK STREET</AddressLine1Txt>
          <CityNm>BEVERLY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01915</ZIPCd>
        </USAddress>
        <EIN>043240453</EIN>
        <PrimaryActivitiesTxt>SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12C</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Lahey Clinic Insurance Co LTD</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <ForeignAddress>
          <AddressLine1Txt>PO Box HM 2450</AddressLine1Txt>
          <CityNm>HAMILTON</CityNm>
          <ProvinceOrStateNm>BERMUDA</ProvinceOrStateNm>
          <CountryCd>BD</CountryCd>
        </ForeignAddress>
        <PrimaryActivitiesTxt>Insurance</PrimaryActivitiesTxt>
        <LegalDomicileForeignCountryCd>BD</LegalDomicileForeignCountryCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>LHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>FOREIGN CORP</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Winchester Healthcare Enterprises</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 Highland Avenue</AddressLine1Txt>
          <CityNm>Winchester</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>042932059</EIN>
        <PrimaryActivitiesTxt>Healthcare VE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C CORP</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Winchester Physician Associates In</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 Highland Avenue</AddressLine1Txt>
          <CityNm>Winchester</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>043262963</EIN>
        <PrimaryActivitiesTxt>Physician PRA</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C CORP</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Northeast Propietary Corporation</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>85 Herrick Street</AddressLine1Txt>
          <CityNm>Beverly</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01915</ZIPCd>
        </USAddress>
        <EIN>042855191</EIN>
        <PrimaryActivitiesTxt>Medical Servi</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C CORP</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>Perpetual Trusts (8)</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 Mall Road</AddressLine1Txt>
          <CityNm>Burlington</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <PrimaryActivitiesTxt>Support</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SEE PART VII</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>Trust</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>1033541</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>21148142</ShareOfEOYAssetsAmt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>REMAINDER TRUSTS (18)</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 MALL ROAD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <PrimaryActivitiesTxt>SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SEE PART VII</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>TRUST</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>94753</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>6990842</ShareOfEOYAssetsAmt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>POOLED INCOME FUNDS (3)</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 MALL ROAD</AddressLine1Txt>
          <CityNm>BURLINGTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01805</ZIPCd>
        </USAddress>
        <PrimaryActivitiesTxt>SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SEE PART VII</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>TRUST</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>106635</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>825972</ShareOfEOYAssetsAmt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>true</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>true</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>true</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>true</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>true</TransferFromOtherOrgInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE R, PART IV</FormAndLineReferenceDesc>
        <ExplanationTxt>NORTHEAST HOSPITAL CORPORATION, LAHEY CLINIC FOUNDATION, INC., AND WINCHESTER HOSPITAL, RESPECTIVELY, HAVE FOUR, THREE, AND ONE PERPETUAL TRUSTS. THE PERPETUAL TRUSTS ARE DOMICILED IN MASSACHUSETTS, PENNSYLVANIA AND FLORIDA. LAHEY CLINIC FOUNDATION, INC. HAS EIGHTEEN REMAINDER TRUSTS. THE REMAINDER TRUSTS ARE DOMICILED IN MASSACHUSETTS, NEW HAMPSHIRE, DELAWARE, WISCONSIN, AND NEW YORK. LAHEY CLINIC FOUNDATION, INC. HAS THREE POOLED INCOME FUNDS, DOMICILED IN MASSACHUSETTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE R, PART V</FormAndLineReferenceDesc>
        <ExplanationTxt>The Lahey Health Shared Services, Inc. Philanthropy Department conducts fundraising and solicitation efforts on behalf of all entities within the Lahey Health System, Inc. family of organizations. Lahey Health System, Inc. and its related organizations, Lahey Clinic Foundation, Inc. and its related organizations, Winchester Healthcare Management, Inc. and its related organizations, Northeast Behavioral Health Corporation and its related organizations, Northeast Senior Health Corporation and its related organization, Northeast Health System, Inc. and its related organization, and Northeast Hospital System, Inc. and its related organization, provide various corporate and other services to each other. The organizations reimburse each other for expenses incurred such as employee salaries and benefits, materials, supplies, utilities, etc. Cash is transferred between the ORGANIZATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>