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    • Medicare Monthly Enrollment

    Metadata Updated: November 27, 2025

    The Medicare Monthly Enrollment data provides current monthly information on the number of Medicare beneficiaries with hospital/medical coverage and prescription drug coverage, available for several geographic areas including national, state/territory, and county. The hospital/medical coverage data can be broken down further by health care delivery (Original Medicare versus Medicare Advantage and Other Health Plans) and the prescription drug coverage data can be examined by those enrolled in stand-alone Prescription Drug Plans and those enrolled in Medicare Advantage Prescription Drug plans. The dataset provides monthly and yearly enrollee trends.

    Access & Use Information

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

    Downloads & Resources

    References

    http://data.cms.gov/resources/medicare-monthly-enrollment-methodology

    Dates

    Metadata Created Date October 7, 2025
    Metadata Updated Date November 27, 2025
    Data Update Frequency R/P1M

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date October 7, 2025
    Metadata Updated Date November 27, 2025
    Publisher Centers for Medicare & Medicaid Services
    Maintainer
    Identifier http://data.cms.gov/data-api/v1/dataset/d7fabe1e-d19b-4333-9eff-e80e0643f2fd/data-viewer
    Data First Published 2025-10-07
    Language en-US
    Data Last Modified 2025-11-25
    Category Medicare
    Public Access Level public
    Data Update Frequency R/P1M
    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 http://data.cms.gov/resources/medicare-monthly-enrollment-data-dictionary
    Harvest Object Id 4e0497af-f47a-4570-ad20-c2f002696c73
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL http://data.cms.gov/summary-statistics-on-beneficiary-enrollment/medicare-and-medicaid-reports/medicare-monthly-enrollment
    License https://www.usa.gov/government-works
    Program Code 009:000
    Related Documents http://data.cms.gov/resources/medicare-monthly-enrollment-methodology
    Source Datajson Identifier True
    Source Hash 3da12fb810353b3b8a7a045dac33a93534a41df2a4780efaa9a727adb8f55c6f
    Source Schema Version 1.1
    Temporal 2025-08-01/2025-08-31

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