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      <ContractorCompensationGrp>
        <ContractorName>
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        </ContractorName>
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          <USAddress>
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          </USAddress>
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      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
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            <StateAbbreviationCd>MA</StateAbbreviationCd>
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          </USAddress>
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        <ServicesDesc>Emergency Room Cover</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
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        </ContractorName>
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          </USAddress>
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      <FeesForServicesLegalGrp>
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      <FeesForServicesProfFundraising>
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      <LicensedStatesCd>MN</LicensedStatesCd>
      <LicensedStatesCd>MS</LicensedStatesCd>
      <LicensedStatesCd>MO</LicensedStatesCd>
      <LicensedStatesCd>MT</LicensedStatesCd>
      <LicensedStatesCd>NE</LicensedStatesCd>
      <LicensedStatesCd>NV</LicensedStatesCd>
      <LicensedStatesCd>NH</LicensedStatesCd>
      <LicensedStatesCd>NJ</LicensedStatesCd>
      <LicensedStatesCd>NM</LicensedStatesCd>
      <LicensedStatesCd>NY</LicensedStatesCd>
      <LicensedStatesCd>NC</LicensedStatesCd>
      <LicensedStatesCd>ND</LicensedStatesCd>
      <LicensedStatesCd>OH</LicensedStatesCd>
      <LicensedStatesCd>OK</LicensedStatesCd>
      <LicensedStatesCd>OR</LicensedStatesCd>
      <LicensedStatesCd>PA</LicensedStatesCd>
      <LicensedStatesCd>RI</LicensedStatesCd>
      <LicensedStatesCd>SC</LicensedStatesCd>
      <LicensedStatesCd>SD</LicensedStatesCd>
      <LicensedStatesCd>TN</LicensedStatesCd>
      <LicensedStatesCd>TX</LicensedStatesCd>
      <LicensedStatesCd>UT</LicensedStatesCd>
      <LicensedStatesCd>VT</LicensedStatesCd>
      <LicensedStatesCd>VA</LicensedStatesCd>
      <LicensedStatesCd>WA</LicensedStatesCd>
      <LicensedStatesCd>WV</LicensedStatesCd>
      <LicensedStatesCd>WI</LicensedStatesCd>
      <LicensedStatesCd>WY</LicensedStatesCd>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <SeverancePaymentInd>true</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>true</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>true</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Howard R Grant JD MD</PersonNm>
        <TitleTxt>TRUSTEE/officer/PRESIDENT/CEO</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>1047242</CompensationBasedOnRltdOrgsAmt>
        <OtherCompensationRltdOrgsAmt>42000</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>248978</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>30707</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>1368927</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Timothy O'Connor</PersonNm>
        <TitleTxt>TRUSTEE/OFFICER/EVP/CFO/treasu</TitleTxt>
        <CompensationBasedOnRltdOrgsAmt>579748</CompensationBasedOnRltdOrgsAmt>
        <OtherCompensationRltdOrgsAmt>39578</OtherCompensationRltdOrgsAmt>
        <DeferredCompRltdOrgsAmt>156600</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsRltdOrgsAmt>28744</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationRltdOrgsAmt>804670</TotalCompensationRltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Bruce A Metz</PersonNm>
        <TitleTxt>SVP CHIEF INFO OFFICER -6/1/17</TitleTxt>
        <BaseCompensationFilingOrgAmt>115300</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>175000</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>329960</OtherCompensationFilingOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>1923</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>622183</TotalCompensationFilingOrgAmt>
      </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>Peter R Lloyd</PersonNm>
        <TitleTxt>officer/VP CORPORATE FINANCE</TitleTxt>
        <BaseCompensationFilingOrgAmt>306858</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>15000</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>35020</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>35000</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>22951</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>414829</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Elizabeth P Conrad</PersonNm>
        <TitleTxt>SVP Chief HR Officer</TitleTxt>
        <BaseCompensationFilingOrgAmt>341701</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>22200</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>28978</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>28623</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>421502</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Gregory A Bazylewicz MD</PersonNm>
        <TitleTxt>SVP Chief Netwrk Dvlp Officer</TitleTxt>
        <BaseCompensationFilingOrgAmt>459056</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>42400</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>28978</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>23210</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>553644</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Pauline M Lodge</PersonNm>
        <TitleTxt>SVP Bus Dev Mkt &amp; Communicatio</TitleTxt>
        <BaseCompensationFilingOrgAmt>371705</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>24400</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>28978</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>20400</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>445483</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>David Reis</PersonNm>
        <TitleTxt>SVP Chief Info Officer</TitleTxt>
        <BaseCompensationFilingOrgAmt>273180</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>27625</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>17901</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>18830</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>3004</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>340540</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>WILLIAM ROBERTSON</PersonNm>
        <TitleTxt>VP &amp; CHIEF FACILITIES OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>243178</BaseCompensationFilingOrgAmt>
        <BonusFilingOrganizationAmount>65000</BonusFilingOrganizationAmount>
        <OtherCompensationFilingOrgAmt>16482</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>25595</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>28703</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>378958</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JAMES E THOMPSON</PersonNm>
        <TitleTxt>SVP PHILANTHROPY</TitleTxt>
        <BaseCompensationFilingOrgAmt>401848</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>22654</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>25805</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>23685</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>473992</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GARY P MARLOW</PersonNm>
        <TitleTxt>VP FINANCE NHS thru 6/2/16</TitleTxt>
        <BaseCompensationFilingOrgAmt>133698</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>234824</OtherCompensationFilingOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>11810</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>380332</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PHILLIPS AXTEN</PersonNm>
        <TitleTxt>VP CCO &amp; ASSOC GENL COUNSEL</TitleTxt>
        <BaseCompensationFilingOrgAmt>111577</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>208129</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>11750</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>8137</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>339593</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>HAROLD E LAWSON JR</PersonNm>
        <TitleTxt>SVP CHIEF REVENUE OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>322270</BaseCompensationFilingOrgAmt>
        <OtherCompensationFilingOrgAmt>28915</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>28978</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>34112</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>414275</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1, 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 1, LINE 4A</FormAndLineReferenceDesc>
        <ExplanationTxt>LHS AND ITS RELATED ORGANIZATIONS HAVE EMPLOYMENT AGREEMENTS THAT CONTAIN SEVERANCE, TRANSITION AND SEPARATION (OR A COMBINATION THEREOF) PAYMENT PROVISIONS. THE FOLLOWING INDIVIDUALS RECEIVED SUCH PAYMENTS: BRUCE A. METZ $257,674 GARY P. MARLOW $149,996 PHILLIPS AXTEN $203,329</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART 1, 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 are 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>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 1 AND FORM 990, PART III, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>LAHEY HEALTH SHARED SERVICES, INC. (LHSS) ADMINISTRATIVELY SUPPORTS LAHEY HEALTH SYSTEM, INC. AND AFFILIATES (LHS OR ORGANIZATION) IN ITS MISSION TO PROVIDE SUPERIOR HEALTHCARE LEADING TO THE BEST POSSIBLE OUTCOME FOR EVERY PATIENT. AS ONE OF THE WORLD'S PREMIER HEALTH CARE ORGANIZATIONS, LHS AIMS TO EXCEED PATIENT'S HIGH EXPECTATIONS FOR SERVICE AND TO ADVANCE MEDICINE THROUGH RESEARCH AND THE EDUCATION OF TOMORROW'S HEALTH CARE LEADERS. IN ADDITION, LHS IS COMMITTED TO IMPROVING THE HEALTH OF AND QUALITY OF LIFE FOR COMMUNITY RESIDENTS BY SUPPORTING ORGANIZATIONS ALIGNED WITH THIS MISSION. ADMINISTRATIVE SUPPORT SERVICES PROVIDED TO LHS BY LHSS INCLUDE, BUT ARE NOT LIMITED, TO THE FOLLOWING; INFORMATION SYSTEMS, HUMAN RESOURCES, PATIENT FINANCIAL SERVICES, PAYROLL, ACCOUNTS PAYABLE, GENERAL ACCOUNTING, BUDGETING, LEGAL, PHILANTHROPY, MARKETING, COMMUNICATIONS, ETC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOLE CORPORATE MEMBER OF THE REPORTING ORGANIZATION IS LAHEY HEALTH SYSTEM, INC. ("LHS"). LHS IS IN CONTACT WITH FEDERAL AND STATE LEGISLATORS REGARDING HEALTH CARE REFORM ISSUES THAT COULD POTENTIALLY HAVE AN IMPACT ON THE ORGANIZATION AND ITS RELATED ORGANIZATIONS. POLITICAL CAMPAIGNS AND LOBBYING ACTIVITIES ARE REPORTED ON FORM 990 SCHEDULE C FILED BY LHS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IV, LINE 11(F) AND SCH D, PART X, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATIONS 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, 7(A) AND 7(B):</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 THE 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 SUBSTANTIALLY 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 11B:</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 SECURE WEBSITE. IN ADDITION, THE FINAL FORM 990 WAS PROVIDED TO THE ENTIRE BOARD OF TRUSTEES VIA THE SAME SECURE WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12(C):</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 POLICY. THE CORPORATE COMPLIANCE DEPARTMENT MONITORS CONFLICTS 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 THE LAHEY HEALTH SYSTEM, INC. AND AFFILIATES; A PERSON MAY BE TOLD THAT THEY CANNOT BE A PRINCIPAL INVESTIGATOR ON A RESEARCH STUDY; A PERSON MAY BE TOLD THAT 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. HAS A WRITTEN DOCUMENT RETENTION AND DESTRUCTION POLICY KNOWN AS THE "RETENTION OF ADMINISTRATIVE AND CLINICAL DOCUMENTS" WHICH 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 LAHEY HEALTH SYSTEM 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 THE DISQUALIFIED INDIVIDUALS AND OTHERS. THE COMMITTEE SEEKS THE ADVICE OF THE EXTERNAL COMPENSATION CONSULTANTS. COMPARABILITY DATA IS PROVIDED, ANALYZED, AND DOCUMENTED 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 B, LINE 16(B):</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION NEGOTIATES ARRANGEMENTS TO INCLUDE TERMS AND SAFEGUARDS TO ENSURE THAT THE ORGANIZATION'S EXEMPT STATUS IS PROTECTED. FROM A LEGAL PERSPECTIVE, IN-HOUSE LEGAL COUNSEL, WITH THE INPUT OF EXTERNAL LEGAL COUNSEL, REVIEWS ALL PROPOSED JOINT VENTURE AND PARTNERSHIP AGREEMENTS. FROM A FINANCIAL PERSPECTIVE, LHS'S FINANCE MANAGEMENT TEAM REVIEWS ALL PROPOSED JOINT VENTURE AND PARTNERSHIP AGREEMENTS. BOTH REVIEWS TAKE PLACE BEFORE LAHEY HEALTH SYSTEM, INC. AND AFFILIATES ENTERS INTO ANY SUCH AGREEMENTS.</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 &amp; ITS AFFILIATES DO NOT COMPENSATE ANY TRUSTEE IN THEIR CAPACITY AS A TRUSTEE. 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 "TRUSTEE".</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VII, PART IX AND SCHEDULE J:</FormAndLineReferenceDesc>
        <ExplanationTxt>BENEFIT AND PENSION EXPENSES FOR OFFICERS AND KEY EMPLOYEES OF LAHEY HEALTH SHARED SERVICES, INC. ARE PAID BY LAHEY CLINIC FOUNDATION, INC. LAHEY CLINIC FOUNDATION, INC. ALLOCATES THE AFOREMENTIONED EXPENSES TO RELATED ORGANIZATIONS. THE RELATED ORGANIZATIONS THEN REIMBURSE LAHEY CLINIC FOUNDATION, INC.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 8</FormAndLineReferenceDesc>
        <ExplanationTxt>DURING 2017, MANAGEMENT BECAME AWARE OF A MISSTATEMENT THAT RELATES TO PRIOR YEARS AND AS A RESULT, CERTAIN PRIOR YEAR AMOUNTS HAVE BEEN REVISED. THE MISSTATEMENT RELATES TO CERTAIN INTERCOMPANY ACTIVITIES DUE TO AND FROM RELATED ORGANIZATIONS. MANAGEMENT DOES NOT BELIEVE THE MISSTATEMENTS ARE MATERIAL, EITHER INDIVIDUALLY OR IN THE AGGREGATE, TO THE PRIOR PERIOD FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:CONSULTING FEES TOTAL FEES:6561818</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:CONTRACT LABOR TOTAL FEES:9633971</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:PURCHASED SERVICES TOTAL FEES:12000773</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:RECRUITMENT AGENCY FEES TOTAL FEES:2759046</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:COLLECTION SERVICES TOTAL FEES:6021223</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>LAHEY HEALTH SYSTEMS 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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      <IdRelatedTaxExemptOrgGrp>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
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        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
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          <StateAbbreviationCd>MA</StateAbbreviationCd>
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      <IdRelatedTaxExemptOrgGrp>
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          <StateAbbreviationCd>MA</StateAbbreviationCd>
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          <BusinessNameLine1Txt>COMMUNITY CARE INC</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
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        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
          <CityNm>WINCHESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>042932059</EIN>
        <PrimaryActivitiesTxt>HEALTHCARE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C CORP</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>WINCHESTER PHYSICIAN ASSOCIATES INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>41 HIGHLAND AVENUE</AddressLine1Txt>
          <CityNm>WINCHESTER</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>01890</ZIPCd>
        </USAddress>
        <EIN>043262963</EIN>
        <PrimaryActivitiesTxt>PHYSICIAN SER</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>WHM</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C CORP</EntityTypeTxt>
        <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>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>false</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>see part vii</BusinessNameLine1Txt>
        </OtherOrganizationName>
      </TransactionsRelatedOrgGrp>
      <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 CORPORATION 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>