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      <RltdOrgOfficerTrstKeyEmplGrp>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3 METHODS TO ESTABLISH COMPENSATION BY RELATED ORGANIZATION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING METHODS ARE USED BY A RELATED ORGANIZATION TO ESTABLISH COMPENSATION OF THE CEO/EXECUTIVE DIRECTOR: A COMPENSATION COMMITTEE, INDEPENDENT COMPENSATION CONSULTANT, WRITTEN EMPLOYMENT CONTRACT, COMPENSATION SURVEY OR STUDY, AND APPROVAL BY THE BOARD OR COMPENSATION COMMITTEE. SUPPLEMENTAL INFORMATION COMPENSATION FOOTNOTES: OFFICERS OF THE BOARD OF TRUSTEES HOURS REFLECT SERVICE TO ALL RELATED ORGANIZATIONS OF MOUNT SINAI HEALTH SYSTEM. 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>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part II PART VII, SECTION A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION FOOTNOTES (1) COMPENSATION AND BENEFITS ARE FUNDED FROM THE MOUNT SINAI HOSPITAL, ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, BETH ISRAEL MEDICAL CENTER, ST. LUKE'S-ROOSEVELT HOSPITAL CENTER, AND/OR NEW YORK EYE AND EAR INFIRMARY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="23017437" softwareVersionNum="2023v5.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS A SINGLE CORPORATE MEMBER, MOUNT SINAI HEALTH SYSTEM, INC., WHICH IS A NOT-FOR-PROFIT CORPORATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOLE CORPORATE MEMBER ELECTS THE GOVERNING BODY OF THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b Decisions requiring approval by members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MEMBER MUST APPROVE ANY AMENDMENTS TO THE BYLAWS OF THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCE DEPARTMENT GATHERED THE RELEVANT INFORMATION AND PREPARED THE TAX RETURNS. THE TAX DEPARTMENT OF OUR INDEPENDENT ACCOUNTANTS, ERNST AND YOUNG (EY), PARTICIPATED IN THE PREPARATION OF, AND REVIEWED, ALL TAX RETURNS. A QUESTIONNAIRE WAS CIRCULATED TO ALL TRUSTEES, 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 REVIEWCOMMITTEE 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 COUNSEL'S 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 COUNSEL'S 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 COUNSEL'S OFFICE, AND THE AUDIT AND COMPLIANCE DEPARTMENT. THE AUDIT COMMITTEE APPROVED THE TAX RETURNS AS PRESENTED. THE AUDIT COMMITTEE'S 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, 2024, BE PROVIDED TO ALL TRUSTEES VIA THE TRUSTEES' CONFIDENTIAL WEBSITE, AND THOSE RETURNS WERE SO PROVIDED BEFORE BEING FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>MONITORING &amp; ENFORCING COMPLIANCE WITH THE POLICY COMPLIANCE WITH THE ORGANIZATION'S 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>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCS AND 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>
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        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>BIMC HOLDCO</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>THE LONG ISLAND COLLEGE HOSPITAL</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>111018985</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>3</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>CHP</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ST LUKE'S-ROOSEVELT HOSPITAL CENTER</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1111 AMSTERDAM AVENUE</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10025</ZIPCd>
        </USAddress>
        <EIN>132997301</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>AUGUSTUS &amp; JAMES CORPORATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>150 E 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>133392851</EIN>
        <PrimaryActivitiesTxt>REAL ESTATE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>Type I</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ST LUKE'S-ROOSEVELT INSTITUTE FOR HEALTH</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1111 AMSTERDAM AVENUE</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10025</ZIPCd>
        </USAddress>
        <EIN>132914343</EIN>
        <PrimaryActivitiesTxt>RESEARCH</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>4</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NEW YORK EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>310 EAST 14TH STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10003</ZIPCd>
        </USAddress>
        <EIN>135562304</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
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        <DirectControllingEntityName>
          <BusinessNameLine1Txt>MSHG</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NEW YORK EYE &amp; EAR INFIRMARY FNDN</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>310 EAST 14TH STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10003</ZIPCd>
        </USAddress>
        <EIN>134012469</EIN>
        <PrimaryActivitiesTxt>PRIVATE FDN</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>PF</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NYEE</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>NYEEI HOUSING COMPANY INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>317-327 EAST 13TH STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10003</ZIPCd>
        </USAddress>
        <EIN>311696826</EIN>
        <PrimaryActivitiesTxt>REAL ESTATE</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(2)</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NYEE</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BETH ISRAEL MEDICAL CENTER FDN INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>300571387</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>BIMC</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ST LUKE'S-ROOSEVELT HOSPITAL CENTER FDN</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>300571390</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
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        <DirectControllingEntityName>
          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BETH ISRAEL MEDICAL CENTER</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>FIRST AVENUE AT 16TH STREET</AddressLine1Txt>
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          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10003</ZIPCd>
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        <EIN>135564934</EIN>
        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
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          <BusinessNameLine1Txt>MSHG</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MOUNT SINAI HEALTH PARTNERS PC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET 5TH FLR</AddressLine1Txt>
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        </USAddress>
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        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
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          <BusinessNameLine1Txt>MSH</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>SOUTH NASSAU COMMUNITIES HOSPITAL INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>ONE HEALTHY WAY</AddressLine1Txt>
          <CityNm>OCEANSIDE</CityNm>
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          <ZIPCd>11572</ZIPCd>
        </USAddress>
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        <PrimaryActivitiesTxt>HOSPITAL</PrimaryActivitiesTxt>
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        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
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          <BusinessNameLine1Txt>MSHG</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>false</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MOUNT SINAI SELF INSURANCE TRUST</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
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        </USAddress>
        <EIN>823994798</EIN>
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          <BusinessNameLine1Txt>MSHS</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>false</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MITRAL FOUNDATION</BusinessNameLine1Txt>
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          <AddressLine1Txt>1190 FIFTH AVENUE</AddressLine1Txt>
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          <ZIPCd>10029</ZIPCd>
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        <PrimaryActivitiesTxt>RESEARCH</PrimaryActivitiesTxt>
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          <BusinessNameLine1Txt>ISMMS</BusinessNameLine1Txt>
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        <ControlledOrganizationInd>true</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>BACHMANN-STRAUSS DYSTONIA FOUNDATION INC</BusinessNameLine1Txt>
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          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
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        <EIN>133804248</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING</PrimaryActivitiesTxt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CARE CONTINUUM VENTURES INC</BusinessNameLine1Txt>
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          <AddressLine1Txt>ONE GUSTAVE L LEVY PLACE</AddressLine1Txt>
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          <BusinessNameLine1Txt>MSHS</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>MSS HEALTH PC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>150 EAST 42ND STREET 5E-32</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <EIN>862530666</EIN>
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        <LegalDomicileStateCd>NJ</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>10</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>MSH</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>MANHATTAN MANAGEMENT SERVICES</BusinessNameLine1Txt>
        </RelatedOrganizationName>
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          <AddressLine1Txt>1780 BROADWAY</AddressLine1Txt>
          <AddressLine2Txt>7TH FL</AddressLine2Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10019</ZIPCd>
        </USAddress>
        <EIN>133618543</EIN>
        <PrimaryActivitiesTxt>MGMT SERVICES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
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          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>SLR MANAGEMENT SERVICES</BusinessNameLine1Txt>
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          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
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          <ZIPCd>10017</ZIPCd>
        </USAddress>
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          <BusinessNameLine1Txt>SLR</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>MOUNT SINAI HC VENTURES</BusinessNameLine1Txt>
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          <AddressLine1Txt>150 EAST 42ND STREET</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
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        </USAddress>
        <EIN>460953126</EIN>
        <PrimaryActivitiesTxt>HEALTH CARE MGMT</PrimaryActivitiesTxt>
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          <AddressLine1Txt>1209 ORANGE STREET</AddressLine1Txt>
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          <StateAbbreviationCd>DE</StateAbbreviationCd>
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        <EIN>874250003</EIN>
        <PrimaryActivitiesTxt>CLINICAL LAB</PrimaryActivitiesTxt>
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          <BusinessNameLine1Txt>ISMMS</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>KANTARO BIOSCIENCES LLC</BusinessNameLine1Txt>
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          <AddressLine1Txt>1460 BROADWAY</AddressLine1Txt>
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        </USAddress>
        <EIN>851089445</EIN>
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          <BusinessNameLine1Txt>PROHEALTH MOUNT SINAI MSO LLC</BusinessNameLine1Txt>
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          <AddressLine1Txt>2322 30TH AVE</AddressLine1Txt>
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          <BusinessNameLine1Txt>MS NETWORK</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1Txt>
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          <BusinessNameLine1Txt>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1Txt>
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      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>P</TransactionTypeTxt>
        <InvolvedAmt>1853214</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule R, Part II, Column (f) LINE 4 - 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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule R, Part II, Column (f) LINE 5 - MSMC RESIDENTIAL REALTY LLC</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule R, Part II, Column (f) LINE 6 - MSMC RESIDENTIAL REALTY MANAGER, INC</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.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>