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    • CMS Program Statistics - Original Medicare Enrollment

    Metadata Updated: December 11, 2025

    The CMS Program Statistics - Original Medicare Enrollment tables provide data on characteristics of the Original Medicare population. 

    For additional information on enrollment, providers, and Medicare use and payment, visit the CMS Program Statistics page.

    Below is the list of tables:

    MDCR ENROLL AB 9.  Original Medicare Enrollment:  Part A and/or Part B Total, Aged, and Disabled Enrollees, Yearly Trend
MDCR ENROLL AB 10.  Original Medicare Enrollment: Part A and/or Part B Enrollees, by Age Group, Yearly Trend
MDCR ENROLL AB 11.  Original Medicare Enrollment:  Part A and/or Part B Enrollees, by Demographic Characteristics
MDCR ENROLL AB 12.  Original Medicare Enrollment:  Part A and/or Part B Enrollees, by Type of Entitlement and Demographic Characteristics
MDCR ENROLL AB 13.  Original Medicare Enrollment:  Part A and/or Part B Total, Aged, and Disabled Enrollees, by Area of Residence
MDCR ENROLL AB 14.  Original Medicare Enrollment:  Part A and/or Part B Enrollees, by Type of Entitlement and Area of Residence

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    References

    https://data.cms.gov/resources/cms-program-statistics-methodology

    Dates

    Metadata Created Date January 25, 2022
    Metadata Updated Date December 11, 2025
    Data Update Frequency R/P1Y

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 25, 2022
    Metadata Updated Date December 11, 2025
    Publisher Centers for Medicare & Medicaid Services
    Maintainer
    Identifier https://data.cms.gov/data-api/v1/dataset/3997fb87-a6d5-41d0-823f-7a62283e8035/data-viewer
    Data First Published 2025-12-09
    Language en-US
    Data Last Modified 2025-09-30
    Category Medicare
    Public Access Level public
    Data Update Frequency R/P1Y
    Bureau Code 009:38
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://healthdata.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Data Dictionary https://data.cms.gov/resources/cms-program-statistics-glossary
    Harvest Object Id 98f62c2d-fda4-436b-a4c0-67d0fbff0556
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/medicare-and-medicaid-reports/cms-program-statistics-original-medicare-enrollment
    License https://www.usa.gov/government-works
    Program Code 009:000
    Related Documents https://data.cms.gov/resources/cms-program-statistics-methodology
    Source Datajson Identifier True
    Source Hash f1a5dcf7942fa3d44b6db6c2e06ebf0d6f15fbc5002a9b07e31b739a05afd9f7
    Source Schema Version 1.1
    Temporal 2013-01-01/2023-12-31

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