﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2023v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-11-09T12:58:30+00:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>346565596</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>ERNST &amp; YOUNG US LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>ONE MANHATTAN WEST</AddressLine1Txt>
        <CityNm>NEW YORK</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>100018604</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>464242915</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>MOUNT SINAI HOSPITALS GROUP INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>MOUN</BusinessNameControlTxt>
      <PhoneNum>2127313149</PhoneNum>
      <USAddress>
        <AddressLine1Txt>ONE GUSTAVE L LEVY PLACE BOX 1099</AddressLine1Txt>
        <CityNm>NEW YORK</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>10029</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Michael Pastier</PersonNm>
      <PersonTitleTxt>Officer</PersonTitleTxt>
      <PhoneNum>2127313149</PhoneNum>
      <SignatureDt>2024-11-09</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Nicole Sokolowski</PreparerPersonNm>
      <PTIN>P01683199</PTIN>
      <PhoneNum>2127733000</PhoneNum>
      <PreparationDt>2024-11-09</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="IRS990EZ" softwareId="23017437" softwareVersionNum="2023v5.1">
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="IRS990ScheduleA">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>0</GrossReceiptsAmt>
      <ContributionsGiftsGrantsEtcAmt>0</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>0</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>0</MembershipDuesAmt>
      <InvestmentIncomeAmt>0</InvestmentIncomeAmt>
      <SaleOfAssetsGrossAmt>0</SaleOfAssetsGrossAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>0</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>0</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>0</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>0</OtherRevenueTotalAmt>
      <TotalRevenueAmt>0</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>0</GrantsAndSimilarAmountsPaidAmt>
      <BenefitsPaidToOrForMembersAmt>0</BenefitsPaidToOrForMembersAmt>
      <SalariesOtherCompEmplBnftAmt>0</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>0</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>0</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>0</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>0</OtherExpensesTotalAmt>
      <TotalExpensesAmt>0</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>0</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>0</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>0</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LandAndBuildingsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>MOUNT SINAI HOSPITALS GROUP (MSHG) WAS FORMED FOR THE CHARITABLE, SCIENTIFIC AND EDUCATIONAL PURPOSES OF PROMOTING, FACILITATING AND ENHANCING THE DELIVERY OF HEATH CARE AND RELATED SERVICES TO, AND IMPROVING AND ENHANCING THE GENERAL HEALTH AND WELL-BEING OF, THE PATIENT POPULATIONS AND COMMUNITIES SERVED BY THE MOUNT SINAI HOSPITAL, BETH ISRAEL MEDICAL CENTER, ST. LUKE'S ROOSEVELT HOSPITAL CENTER, NEW YORK EYE AND EAR INFIRMARY, AND SOUTH NASSAU COMMUNITIES HOSPITAL (THE "HOSPITALS"). SPECIFICALLY, MSHG WAS FORMED TO SERVE AS THE PARENT COMPANY AND SOLE MEMBER OF THE HOSPITALS, FOR THE PURPOSE OF ENGAGING IN VARIOUS ACTIVITIES THAT FURTHER, SUPPORT, BENEFIT AND/OR CARRY OUT THE CHARITABLE, EDUCATIONAL AND SCIENTIFIC PURPOSES, MISSIONS, OBJECTIVES, OPERATIONS AND ACTIVITIES OF THE HOSPITALS, INCLUDING OVERSEEING, SUPERVISING AND COORDINATING THE MISSIONS, GOVERNANCE, POLICY MAKING, AND STRATEGIC PANNING FOR, AND PROVIDING OTHER FORMS OF SUPPORT FOR THE BENEFIT OF THE HOSPITALS.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>NONE</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>0</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>0</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JEFF BLAU</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SUSAN CULLMAN</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>GLENN DUBIN</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOEL EHRENKRANZ</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>RICHARD FRIEDMAN</PersonNm>
        <TitleTxt>CO-CHAIRMAN OF BOARD/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DONALD GOGEL</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOHN HESS</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>STEVEN HOCHBERG</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BRAD KARP</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOHN LEVIN</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ERIC MINDICH</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MICHAEL MINIKES</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES NEARY</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOEL PICKET</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JUDITH RUBIN</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ANDREW SAUL</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>THOMAS STRAUSS</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES TISCH</PersonNm>
        <TitleTxt>CO-CHAIRMAN OF BOARD/TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Richard Ravitch</PersonNm>
        <TitleTxt>VICE CHAIRMAN/TRUSTEE (END JUNE 2023)</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ANDREW ALPER</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Frank BISIGNANO</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ANTHONY CANCELLIERI</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Edgar CULLMAN</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOSEPH FENNESSY</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ERIC FRIEDMAN</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KIMBERLEY HARRIS</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES KEMPNER</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARC LIPSCHULTZ</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>LEWIS PELL</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ROBERT SAVAGE</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DAVID WINDREICH</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>WILLIAM WRIGHT</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MICHAEL ZIMMERMAN</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KENNETH DAVIS</PersonNm>
        <TitleTxt>PRESIDENT AND CEO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>DENNIS CHARNEY</PersonNm>
        <TitleTxt>PRESIDENT, ACADEMIC AFFAIRS</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARGARET PASTUSZKO</PersonNm>
        <TitleTxt>PRESIDENT, SYSTEM COO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JEREMY BOAL END 122023</PersonNm>
        <TitleTxt>EVP, SYSTEM CHIEF CLINICAL OFF</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BETH ESSIG</PersonNm>
        <TitleTxt>EVP, GENERAL COUNSEL</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>STEPHEN HARVEY</PersonNm>
        <TitleTxt>EVP, SYSTEM CFO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JEFFREY SILBERSTEIN</PersonNm>
        <TitleTxt>EVP, SYSTEM CAO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>KELLY CASSANO</PersonNm>
        <TitleTxt>EVP, SYS AMBULATORY OPERATION</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MICHAEL PASTIER</PersonNm>
        <TitleTxt>SVP, Chief Financial Officer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES CRYSTAL</PersonNm>
        <TitleTxt>VICE CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BONNIE DAVIS</PersonNm>
        <TitleTxt>VICE CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CARL ICAHN</PersonNm>
        <TitleTxt>VICE CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES HAMILTON</PersonNm>
        <TitleTxt>VICE CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>HENRY KRAVIS</PersonNm>
        <TitleTxt>VICE CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>HON ROBERT E RUBIN</PersonNm>
        <TitleTxt>VICE CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.000</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Frank Cino</PersonNm>
        <TitleTxt>SVP, SYSTEM CHIEF RISK OFFICER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.500</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>NY</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>MICHAEL PASTIER</BusinessNameLine1Txt>
        </BusinessName>
        <USAddress>
          <AddressLine1Txt>150 E 42ND STREET 5TH FLOOR</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <PhoneNum>2127313149</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>true</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <OtherEmployeePaidOver100kCnt>0</OtherEmployeePaidOver100kCnt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="IRS990ScheduleA" softwareId="23017437" softwareVersionNum="2023v5.1">
      <SupportingOrganization509a3Ind>X</SupportingOrganization509a3Ind>
      <SupportingOrgType2Ind>X</SupportingOrgType2Ind>
      <SupportedOrganizationsCnt>5</SupportedOrganizationsCnt>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>THE MOUNT SINAI HOSPITAL</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>131624096</EIN>
        <OrganizationTypeCd>3</OrganizationTypeCd>
        <GoverningDocumentListedInd>true</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>BETH ISRAEL MEDICAL CENTER</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>135564934</EIN>
        <OrganizationTypeCd>3</OrganizationTypeCd>
        <GoverningDocumentListedInd>true</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>ST LUKE'S ROOSEVELT HOSPITAL CENTER</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>132997301</EIN>
        <OrganizationTypeCd>3</OrganizationTypeCd>
        <GoverningDocumentListedInd>true</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>NEW YORK EYE AND EAR INFIRMARY</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>135562304</EIN>
        <OrganizationTypeCd>3</OrganizationTypeCd>
        <GoverningDocumentListedInd>true</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>SOUTH NASSAU COMMUNITIES HOSPITAL</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>111352310</EIN>
        <OrganizationTypeCd>3</OrganizationTypeCd>
        <GoverningDocumentListedInd>true</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrganizationsTotalCnt>5</SupportedOrganizationsTotalCnt>
      <SupportSumAmt>0</SupportSumAmt>
      <OtherSupportSumAmt>0</OtherSupportSumAmt>
      <Form990SchASupportingOrgGrp>
        <ListedByNameGoverningDocInd>true</ListedByNameGoverningDocInd>
        <SuprtOrgNoIRSDeterminationInd>false</SuprtOrgNoIRSDeterminationInd>
        <SupportedOrgSectionC456Ind>false</SupportedOrgSectionC456Ind>
        <SupportedOrgNotOrganizedUSInd>false</SupportedOrgNotOrganizedUSInd>
        <OrganizationChangeSuprtOrgInd>false</OrganizationChangeSuprtOrgInd>
        <SupportNonSupportedOrgInd>false</SupportNonSupportedOrgInd>
        <PaymentSubstantialContribtrInd>false</PaymentSubstantialContribtrInd>
        <LoanDisqualifiedPersonInd>false</LoanDisqualifiedPersonInd>
        <ControlledDisqualifiedPrsnInd>false</ControlledDisqualifiedPrsnInd>
        <DisqualifiedPrsnControllIntInd>false</DisqualifiedPrsnControllIntInd>
        <DisqualifiedPrsnOwnrIntInd>false</DisqualifiedPrsnOwnrIntInd>
        <ExcessBusinessHoldingsRulesInd>false</ExcessBusinessHoldingsRulesInd>
        <ContributionControllerInd>false</ContributionControllerInd>
        <ContributionFamilyInd>false</ContributionFamilyInd>
        <Contribution35ControlledInd>false</Contribution35ControlledInd>
      </Form990SchASupportingOrgGrp>
      <MajorityDirTrstSupportedOrgInd>false</MajorityDirTrstSupportedOrgInd>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>Schedule A, Part IV, Section C, Line 1 Majority director detail</FormAndLineReferenceDesc>
        <ExplanationTxt>CONTROL AND MANAGEMENT OF MOUNT SINAI HOSPITALS GROUP, INC. IS VESTED IN THE SAME PERSONS THAT CONTROL AND MANAGE ITS SUPPORTED ORGANIZATIONS BY VIRTUE OF THE OVERLAP OF THE TRUSTEES AND OFFICERS OF MOUNT SINAI HOSPITALS GROUP, INC. AND ITS SUPPORTED ORGANIZATIONS. ALTHOUGH THE TRUSTEES OF MOUNT SINAI HOSPITALS GROUP, INC. DO NOT COMPRISE A MAJORITY OF EACH OF THE BOARDS OF ITS SUPPORTED ORGANIZATIONS, NONETHELESS ALL OF THE TRUSTEES OF MOUNT SINAI HOSPITALS GROUP, INC. SERVE ON THE BOARDS OF SOME OR ALL OF MOUNT SINAI HOSPITALS GROUP, INC.'S SUPPORTED ORGANIZATIONS. FURTHER, ALL OF THE OFFICERS OF MOUNT SINAI HOSPITALS GROUP, INC. ALSO SERVE AS OFFICERS OF ALL OF MOUNT SINAI HOSPITALS GROUP, INC.'S SUPPORTED ORGANIZATIONS.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="23017437" softwareVersionNum="2023v5.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part III, Exempt Purpose PRIMARY EXEMPT PURPOSE</FormAndLineReferenceDesc>
        <ExplanationTxt>MOUNT SINAI HOSPITALS GROUP (MSHG) WAS FORMED FOR THE CHARITABLE, SCIENTIFIC AND EDUCATIONAL PURPOSES OF PROMOTING, FACILITATING AND ENHANCING THE DELIVERY OF HEATH CARE AND RELATED SERVICES TO, AND IMPROVING AND ENHANCING THE GENERAL HEALTH AND WELL-BEING OF, THE PATIENT POPULATIONS AND COMMUNITIES SERVED BY THE MOUNT SINAI HOSPITAL, BETH ISRAEL MEDICAL CENTER, ST. LUKE'S ROOSEVELT HOSPITAL CENTER, NEW YORK EYE AND EAR INFIRMARY, AND SOUTH NASSAU COMMUNITIES HOSPITAL (THE "HOSPITALS"). SPECIFICALLY, MSHG WAS FORMED TO SERVE AS THE PARENT COMPANY AND SOLE MEMBER OF THE HOSPITALS, FOR THE PURPOSE OF ENGAGING IN VARIOUS ACTIVITIES THAT FURTHER, SUPPORT, BENEFIT AND/OR CARRY OUT THE CHARITABLE, EDUCATIONAL AND SCIENTIFIC PURPOSES, MISSIONS, OBJECTIVES, OPERATIONS AND ACTIVITIES OF THE HOSPITALS, INCLUDING OVERSEEING, SUPERVISING AND COORDINATING THE MISSIONS, GOVERNANCE, POLICY MAKING, AND STRATEGIC PANNING FOR, AND PROVIDING OTHER FORMS OF SUPPORT FOR THE BENEFIT OF THE HOSPITALS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>