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      <BuildingsGrp />
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        <FormAndLineReferenceDesc>Part I, Line 2</FormAndLineReferenceDesc>
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        <CompensationBasedOnRltdOrgsAmt>212097</CompensationBasedOnRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DENNIS CHARNEY MD2</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>1083333</CompensationBasedOnRltdOrgsAmt>
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        <BonusRelatedOrganizationsAmt>384800</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>STEPHEN HARVEY</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
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        <BonusRelatedOrganizationsAmt>234728</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
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        <NontaxableBenefitsRltdOrgsAmt>49881</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>910578</TotalCompensationRltdOrgsAmt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARK KOSTEGAN FAHP</PersonNm>
        <TitleTxt>VICE PRESIDENT FOR DEVELOPMENT</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part VII, Section A &amp; Schedule J</FormAndLineReferenceDesc>
        <ExplanationTxt>Compensation Footnotes OFFICERS OF THE BOARDS OF TRUSTEES HOURS REFLECT SERVICE TO ALL RELATED ORGANIZATIONS OF MOUNT SINAI HEALTH SYSTEM, INC. (2) Employee has an outstanding loan reflected in Schedule L, Part II of Icahn School of Medicine at Mount Sinai's Form 990. OTHER REPORTABLE COMPENSATION FOR OFFICERS, KEY EMPLOYEES, AND HIGHEST COMPENSATED EMPLOYEES AS IDENTIFIED IN THE FORM 990, PART VII, AND LISTED ON SCHEDULE J MAY INCLUDE VARIOUS TYPES OF SUPPLEMENTAL WAGES.</ExplanationTxt>
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    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 5</FormAndLineReferenceDesc>
        <ExplanationTxt>Number of Employees Employees of The Mount Sinai Hospital and The Icahn School of Medicine at Mount Sinai, including employees providing services at Elmhurst Hospital Center and Queens Hospital Center, utilize a common paymaster under the Hospital's tax identification number. The total number of employees reported under The Mount Sinai Hospital's tax identification number with the common paymaster system is 30,865 individuals. In addition, The Mount Sinai Hospital operates payroll for some related entities, including the Mitral Foundation, as well as shared employee expense. All salaries are allocated back to the separate entities and reported as if paid directly by them. Part V Lines 1 and 2 &amp; Part IX Lines 7-11 The organization does not pay any employees or independent contractors directly and therefore, does not issue any W-2s or 1099s. The payments are made by the Icahn School of Medicine at Mount Sinai, a related organization, and allocated to the organization. Part VI, Section A, Line 7a Persons with authority to elect members of the governing body Icahn School of Medicine at Mount Sinai has the power to appoint four (4) of the seven (7) members of the board of directors of the organization. Jurgen A. Friedrich has the authority to appoint the remaining three (3) members of the board of directors of the organization.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 PROVIDED TO GOVERNING BODY The Finance Department gathered the relevant information and prepared the tax returns. * The Tax department of our outside auditors, Ernst &amp; Young (EY), participated in the preparation of, and reviewed, all tax returns. * A questionnaire was circulated to all trustees (i.e., directors), officers and key employees in order to elicit the information required to be reported on the tax returns. * The Trustee Conflicts of Interest Review Committee reviewed the responses provided by trustees and certain officers in the questionnaires and assessed additional pertinent facts gathered by the institution in order to evaluate the applicability of IRS reporting requirements. The Review Committee then determined the appropriate trustee (and certain officer) disclosures that should be made on Form 990 based on the recommendations of the Finance Department, the General Counsels office and the Audit and Compliance Department. These recommendations were reviewed and approved by EY. The same process was conducted by the Finance Department, the General Counsels office, the Audit and Compliance Department and EY with respect to the questionnaires submitted by other officers and key employees. * The Audit and Compliance Committee of the Board of Trustees conducted a review of the entire tax return, with the participation of EY, the Finance Department, the General Counsels office, and the Audit and Compliance Department. The Audit Committee approved the tax returns as presented. * The Audit Committees report of its review of the tax returns and its recommendation to file the returns were presented to, and accepted by, the Executive Committee of the Board of Trustees (the Executive Committee). * In addition to authorizing the filing of the tax returns, the Executive Committee directed that the returns, which will be filed on or before November 15, 2019, be provided to all trustees via the trustees confidential website, and those returns were so provided before being filed.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>Monitoring &amp; enforcing compliance with the policy Compliance with the Organizations Business Conflicts of Interest Policy (the Policy) is required of trustees, employees, medical staff and non-employee members of institutional committees and includes an ongoing duty to disclose potential conflicts. Compliance with the Policy is monitored and enforced regularly and consistently. All disclosures with the potential for conflict are reviewed by an appropriate committee where they are carefully evaluated. When appropriate, a plan, which may involve measures including, but not limited to, recusal from participating in affected transactions, is developed to manage the potential conflict.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B, QUESTIONS 12-14</FormAndLineReferenceDesc>
        <ExplanationTxt>The boards of the Mount Sinai Medical Center, Icahn School of Medicine at Mount Sinai and The Mount Sinai Hospital have adopted all policies referred to in form 990, Part VI, Section B questions 12 to 14, which would apply to all owned/controlled entities, including Mitral Foundation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Governing documents, conflict of interest policy available to the public The organization makes its Business Conflicts of Interest Policy available on its website (www.mountsinai.org) and makes its governing documents and financial statements available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
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          <BusinessNameLine1Txt>THE MOUNT SINAI MEDICAL CENTER INC</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MSMC RESIDENTIAL REALTY MANAGER INC</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>VALENTIN FUSTER MT SINAI FND SCI HLTH</BusinessNameLine1Txt>
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        <DisregardedEntityName>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>CONTINUUM HEALTH PARTNERS INC</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>ST LUKE'S-ROOSEVELT HOSPITAL CENTER</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>NEW YORK EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>MSHG</BusinessNameLine1Txt>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>NEW YORK EYE &amp; EAR INFIRMARY FNDN</BusinessNameLine1Txt>
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          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10003</ZIPCd>
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        <PrimaryActivitiesTxt>PRIVATE FDN</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>PF</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>NYEE</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NYEEI HOUSING COMPANY INC</BusinessNameLine1Txt>
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          <ZIPCd>10003</ZIPCd>
        </USAddress>
        <EIN>311696826</EIN>
        <PrimaryActivitiesTxt>REAL ESTATE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
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          <BusinessNameLine1Txt>NYEE</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BETH ISRAEL MEDICAL CENTER FDN INC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>150 East 42nd Street</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
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        <EIN>300571387</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING</PrimaryActivitiesTxt>
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          <BusinessNameLine1Txt>BIMC</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ST LUKE'S-ROOSEVELT HOSPITAL CENTER FDN</BusinessNameLine1Txt>
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          <ZIPCd>10017</ZIPCd>
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        <PrimaryActivitiesTxt>FUNDRAISING</PrimaryActivitiesTxt>
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          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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          <BusinessNameLine1Txt>BETH ISRAEL MEDICAL CENTER</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>FIRST AVENUE AT 16TH STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10003</ZIPCd>
        </USAddress>
        <EIN>135564934</EIN>
        <PrimaryActivitiesTxt>Hospital</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MSHG</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>Mount Sinai Health Partners PC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET 5th FLR</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>812057452</EIN>
        <PrimaryActivitiesTxt>Healthcare</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MSH</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>SOUTH NASSAU COMMUNITIES HOSPITAL INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>ONE HEALTHY WAY</AddressLine1Txt>
          <CityNm>OCEANSIDE</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>115721551</ZIPCd>
        </USAddress>
        <EIN>111352310</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MSHG</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MOUNT SINAI SELF INSURANCE TRUST</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>823994798</EIN>
        <PrimaryActivitiesTxt>SUPPORT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>12 TYPE I</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MSHS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>GREATER METROPOLITAN IPA II</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>150 East 42nd Street</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>133977019</EIN>
        <PrimaryActivitiesTxt>INACTIVE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>BIMCSLR</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>GREATER METROPOLITAN IPA V</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>150 East 42nd Street</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>134141695</EIN>
        <PrimaryActivitiesTxt>INACTIVE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>BIMCSLR</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>MANHATTAN MANAGEMENT SERVICES</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1780 BROADWAY 7TH FL</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10019</ZIPCd>
        </USAddress>
        <EIN>133618543</EIN>
        <PrimaryActivitiesTxt>MGMT SERVICES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>SLR MANAGEMENT SERVICES</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>150 East 42nd Street</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>133853145</EIN>
        <PrimaryActivitiesTxt>MGMT SERVICES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>WEST CARE MEDICAL PC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>150 East 42nd Street</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>133811203</EIN>
        <PrimaryActivitiesTxt>INACTIVE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>CHP VENTURES INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>150 East 42nd Street</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>460953126</EIN>
        <PrimaryActivitiesTxt>HEALTH CARE MGMT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>BIMC HOLDCO</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>MOUNT SINAI GENOMICS INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1425 MADISON AVE</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10029</ZIPCd>
        </USAddress>
        <EIN>475349024</EIN>
        <PrimaryActivitiesTxt>CLINICAL LAB</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ISMMS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>HIBER-CELL INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>850 New Burton Road Suite 201</AddressLine1Txt>
          <CityNm>Dover</CityNm>
          <StateAbbreviationCd>DE</StateAbbreviationCd>
          <ZIPCd>19904</ZIPCd>
        </USAddress>
        <EIN>820608182</EIN>
        <PrimaryActivitiesTxt>CLINICAL LAB</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ISMMS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>AMATHUS THERAPEUTICS INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1506 BOSTON PROVIDENCE HIGHWAY STE</AddressLine1Txt>
          <CityNm>NORWOOD</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02062</ZIPCd>
        </USAddress>
        <EIN>814373501</EIN>
        <PrimaryActivitiesTxt>BIOTECH/PHARM</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ISMMS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>true</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>true</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>167389</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>O</TransactionTypeTxt>
        <InvolvedAmt>306560</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II, LINE 4, COLUMN F - MSMC REALTY CORPORATION</FormAndLineReferenceDesc>
        <ExplanationTxt>DIRECT CONTROLLING ENTITY ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, THE MOUNT SINAI HOSPITAL AND MOUNT SINAI MEDICAL CENTER ARE ALL MEMBERS OF THIS ENTITY. PART II, LINE 5, COLUMN F - MSMC RESIDENTIAL REALTY LLC DIRECT CONTROLLING ENTITY ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, THE MOUNT SINAI HOSPITAL, THE MSMC REALTY CORPORATION AND THE MSMC RESIDENTIAL REALTY MANAGER, INC. ARE ALL MEMBERS OF THIS ENTITY. PART II, LINE 7, COLUMN F - MSMC RESIDENTIAL REALTY MANAGER, INC DIRECT CONTROLLING ENTITY ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, THE MOUNT SINAI HOSPITAL AND THE MSMC REALTY CORPORATION ARE ALL MEMBERS OF THIS ENTITY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>