﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2024v5.2" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-09-23T12:43:09-07:00</ReturnTs>
    <TaxPeriodEndDt>2024-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>111679599</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>St Marys Hospital for Children</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>2901 216th Street</AddressLine1Txt>
        <CityNm>Bayside</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>11360</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>136163550</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>ST MARYS REHABILITATION CENTER FOR</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>CHILDREN</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>STMA</BusinessNameControlTxt>
      <PhoneNum>7182818777</PhoneNum>
      <USAddress>
        <AddressLine1Txt>29-01 216TH STREET</AddressLine1Txt>
        <CityNm>BAYSIDE</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>11360</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>SEAN LALLY</PersonNm>
      <PersonTitleTxt>President &amp; CEO</PersonTitleTxt>
      <SignatureDt>2025-09-23</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>St Mary's Hospital for Children</PreparerPersonNm>
      <PhoneNum>7188192889</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="2">
    <IRS990EZ documentId="IRS990EZ" referenceDocumentId="TransfersPersonalBenefitsContr IRS990ScheduleO" softwareId="24020490" softwareVersionNum="2024v5.2">
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WWW.STMARYSKIDS.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="IRS990ScheduleA">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <TotalRevenueAmt>0</TotalRevenueAmt>
      <Form990TotalAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>St. Marys Rehabilitation Center for Childrens primary exempt mission is to support the tax-exempt healthcare mission of St. Marys Hospital for Children. The entity does not actively engage in any business activities. All of the accounts have been closed at the end of the year 2023.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>ST.MARY'S REHABILITATION CENTER FOR CHILDREN DID NOT UNDERTAKE ANY PROGRAMMATIC ACTIVITIES IN THE CURRENT CALENDER YEAR.</DescriptionProgramSrvcAccomTxt>
      </ProgramSrvcAccomplishmentGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CINDY JOHNSON</PersonNm>
        <TitleTxt>CHAIR PERSON</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>EDWIN F SIMPSER MD</PersonNm>
        <TitleTxt>President &amp; CEO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARK GOLDBERG</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>RAYMOND M PLANELL</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SAMUEL R KARETSKY</PersonNm>
        <TitleTxt>SECRETARY/TREAS</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>WILLIAM L MEAD</PersonNm>
        <TitleTxt>COO/CFO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SEAN LALLY</PersonNm>
        <TitleTxt>VP FOUNDATION</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ADAM WAXER</PersonNm>
        <TitleTxt>GENERAL COUNSEL</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>STEVEN POLINSKY</PersonNm>
        <TitleTxt>CIO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>CARLA CANGEMI</PersonNm>
        <TitleTxt>VP/CMO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>PATRICIA HACKENJOS</PersonNm>
        <TitleTxt>VP OF HR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </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>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>NY</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>MELISSA SANDLER DIR OF FINANCE</PersonNm>
        <USAddress>
          <AddressLine1Txt>333 EARLE OVINGTON BLVD SUITE 600</AddressLine1Txt>
          <CityNm>UNIONDALE</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>11553</ZIPCd>
        </USAddress>
        <PhoneNum>7188192889</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="IRS990ScheduleA" softwareId="24020490" softwareVersionNum="2024v5.2">
      <SupportingOrganization509a3Ind>X</SupportingOrganization509a3Ind>
      <SupportingOrgType2Ind>X</SupportingOrgType2Ind>
      <SupportedOrganizationsCnt>1</SupportedOrganizationsCnt>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>ST MARYS HOSPITAL FOR CHILDREN IN</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>111679599</EIN>
        <OrganizationTypeCd>3</OrganizationTypeCd>
        <GoverningDocumentListedInd>false</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrganizationsTotalCnt>1</SupportedOrganizationsTotalCnt>
      <OtherSupportSumAmt>0</OtherSupportSumAmt>
      <Form990SchASupportingOrgGrp>
        <ListedByNameGoverningDocInd>false</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>true</MajorityDirTrstSupportedOrgInd>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>Part IV, Section A, Line 1: Description Of How Supported Organizations Are Desigated</FormAndLineReferenceDesc>
        <ExplanationTxt>St. Marys Rehabilitation Center for Childrens primary exempt mission is to support the tax-exempt healthcare mission of St. Marys Hospital for Children. The entity does not actively engage in any business activities. All the accounts have been closed at the end of the year 2023.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
  </ReturnData>
</Return>