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    • CMS Program Statistics - Medicare Part D Enrollment

    Metadata Updated: December 11, 2025

    The CMS Program Statistics - Medicare Part D Enrollment tables provide data on characteristics of the Medicare Part D covered 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 D 1. Medicare Part D Enrollment: Part D Enrollees by Type of Plan, Low Income Subsidy (LIS), and Retiree Drug Subsidy, Yearly Trend
MDCR ENROLL D 2. Medicare Part D Enrollment: Part D Enrollees by Type of Plan, Low Income Subsidy (LIS), and Retiree Drug Subsidy, by Demographic Characteristics
MDCR ENROLL D 3. Medicare Part D Enrollment: Part D Enrollees by Type of Plan, Low Income Subsidy (LIS), and Retiree Drug Subsidy, by 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/d8c69aca-2497-4a83-a181-706a960c77f0/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 e37842fe-06f5-48e1-87ca-63030386daa0
    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-medicare-part-d-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 bdfdc947e0d9c6a2085c8fc85c3c9e6681a9519b4db5f780b29ef2d710e125bd
    Source Schema Version 1.1
    Temporal 2013-01-01/2023-12-31

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