<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2020v4.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2021-11-15T15:48:15-06:00</ReturnTs>
    <TaxPeriodEndDt>2020-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>364476856</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>PROFESSIONAL PRACTICE CONSULTANTS INC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>760 VILLAGE CENTER DR STE 240</AddressLine1Txt>
        <CityNm>BURR RIDGE</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60527</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2020-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>462118033</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CHICAGO RHEUMATISM SOCIETY</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>CHIC</BusinessNameControlTxt>
      <PhoneNum>8476801666</PhoneNum>
      <USAddress>
        <AddressLine1Txt>10 WEST PHILLIP ROAD</AddressLine1Txt>
        <CityNm>VERNON HILLS</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60061</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>ANISHA DUA MD MPH</PersonNm>
      <PersonTitleTxt>PRESIDENT</PersonTitleTxt>
      <PhoneNum>8476801666</PhoneNum>
      <SignatureDt>2021-11-09</SignatureDt>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>ANISHA</PersonFirstNm>
        <PersonLastNm>DUA MD</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>LORI L STADLER CPA</PreparerPersonNm>
      <PTIN>P01313334</PTIN>
      <PhoneNum>6304721600</PhoneNum>
      <PreparationDt>2021-11-12</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2020</TaxYr>
    <BuildTS>2022-09-23 18:48:47Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="RetDoc2" referenceDocumentId="RetDoc3">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc4">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>27750</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ProgramServiceRevenueAmt>27750</ProgramServiceRevenueAmt>
      <TotalRevenueAmt>27750</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>9751</FeesAndOtherPymtToIndCntrctAmt>
      <PrintingPublicationsPostageAmt>282</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>14453</OtherExpensesTotalAmt>
      <TotalExpensesAmt>24486</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>3264</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>125599</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>128863</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>125599</BOYAmt>
        <EOYAmt>128863</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>125599</BOYAmt>
        <EOYAmt>128863</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>125599</BOYAmt>
        <EOYAmt>128863</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>THE CHICAGO RHEUMATISM SOCIETY IS ORGANIZED EXCLUSIVELY FOR SCIENTIFIC AND EDUCATIONAL PURPOSES. THE PURPOSE OF THE CORPORATION IS: -TO EDUCATE HEALTH CARE PROFESSIONALS WHO ARE INVOLVED IN THE TREATMENT OF PATIENTS WITH RHEUMATIC DISEASES. -TO UPDATE THESE HEALTH CARE PROFESSIONALS ON CURRENT RESEARCH. -TO ORGANIZE AND ADVOCATE FOR THE SPECIALTY IN GOVERNMENTAL POLICY. -TO PROVIDE A VENUE TO COMMUNICATE AND SUPPORT COLLEAGUES IN THE FIELD OF RHEUMATOLOGY.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>THE CHICAGO RHEUMATISM SOCIETY HOSTS INFORMATIONAL MEETINGS RELATED TO THE STUDY AND TREATMENT OF PATIENTS WITH RHEUMATIC DISEASES.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>23598</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>DEPRECIATION EXPENSE</DescriptionProgramSrvcAccomTxt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>23598</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentId="RetDoc1">LORI B SIEGEL MD</PersonNm>
        <TitleTxt>PAST PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentId="RetDoc1">ANISHA DUA MD MPH</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>5.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentId="RetDoc1">ROBERT M GOLDMAN DO</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentId="RetDoc1">RICHARD PAUL</PersonNm>
        <TitleTxt>SECRETARY/AD</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>7.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>9000</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>IL</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>RICHARD PAUL</PersonNm>
        <USAddress>
          <AddressLine1Txt>10 W PHILLIP ROAD</AddressLine1Txt>
          <AddressLine2Txt>SUITE 120</AddressLine2Txt>
          <CityNm>VERNON HILLS</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>600611730</ZIPCd>
        </USAddress>
        <PhoneNum>8476801666</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="RetDoc4">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>81200</CurrentTaxYearMinus4YearsAmt>
        <TotalAmt>81200</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsNonUnrltBusGrp>
        <CurrentTaxYearMinus3YearsAmt>93467</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>73500</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>72750</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>27750</CurrentTaxYearAmt>
        <TotalAmt>267467</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>81200</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>93467</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>73500</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>72750</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>27750</CurrentTaxYearAmt>
        <TotalAmt>348667</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>348667</PublicSupportTotal509Amt>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>81200</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>93467</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>73500</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>72750</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>27750</CurrentTaxYearAmt>
        <TotalAmt>348667</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>1.00000</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>1.00000</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES SUPPLIES 86 CONFERENCE AND MEETING EXPENS 8,981 WEBSITE 2,639 BANK AND CREDIT CARD FEES 682 MISCELLANEOUS 565 AWARDS/PRIZES 1,500 TOTAL 14,453</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24</FormAndLineReferenceDesc>
        <ExplanationTxt>ORGANIZATION EXPENSE 7,340 7,340 LESS ACCUMULATED DEPRECIATION 7,340 7,340 PROJECTOR 0 0 TOTAL 0 0</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART III</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHICAGO RHEUMATISM SOCIETY IS ORGANIZED EXCLUSIVELY FOR SCIENTIFIC AND EDUCATIONAL PURPOSES. THE PURPOSE OF THE CORPORATION IS: -TO EDUCATE HEALTH CARE PROFESSIONALS WHO ARE INVOLVED IN THE TREATMENT OF PATIENTS WITH RHEUMATIC DISEASES. -TO UPDATE THESE HEALTH CARE PROFESSIONALS ON CURRENT RESEARCH. -TO ORGANIZE AND ADVOCATE FOR THE SPECIALTY IN GOVERNMENTAL POLICY. -TO PROVIDE A VENUE TO COMMUNICATE AND SUPPORT COLLEAGUES IN THE FIELD OF RHEUMATOLOGY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART III, LINE 31</FormAndLineReferenceDesc>
        <ExplanationTxt>DEPRECIATION EXPENSE</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <CompensationExplanation documentId="RetDoc1">
      <CompensationExplanationGrp>
        <PersonNm>LORI B SIEGEL MD</PersonNm>
      </CompensationExplanationGrp>
      <CompensationExplanationGrp>
        <PersonNm>ANISHA DUA MD MPH</PersonNm>
      </CompensationExplanationGrp>
      <CompensationExplanationGrp>
        <PersonNm>ROBERT M GOLDMAN DO</PersonNm>
      </CompensationExplanationGrp>
      <CompensationExplanationGrp>
        <PersonNm>RICHARD PAUL</PersonNm>
      </CompensationExplanationGrp>
    </CompensationExplanation>
  </ReturnData>
</Return>
