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    • Opt Out Affidavits

    Metadata Updated: December 27, 2025

    The Opt Out Affidavits dataset provides information on providers who have decided not to participate in Medicare. It contains provider's NPI, specialty, address, and effective dates.

    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/opt-out-affidavits-methodology

    Dates

    Metadata Created Date January 25, 2022
    Metadata Updated Date December 27, 2025
    Data Update Frequency R/P1M

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 25, 2022
    Metadata Updated Date December 27, 2025
    Publisher Centers for Medicare & Medicaid Services
    Maintainer
    Identifier https://data.cms.gov/data-api/v1/dataset/9887a515-7552-4693-bf58-735c77af46d7/data-viewer
    Data First Published 2025-12-09
    Language en-US
    Data Last Modified 2025-12-22
    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 https://data.cms.gov/resources/opt-out-affidavits-data-dictionary
    Harvest Object Id daa092ca-d0e5-4ed8-bbca-2fa5a9ab3159
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://data.cms.gov/provider-characteristics/medicare-provider-supplier-enrollment/opt-out-affidavits
    License https://www.usa.gov/government-works
    Program Code 009:000
    Related Documents https://data.cms.gov/resources/opt-out-affidavits-methodology
    Source Datajson Identifier True
    Source Hash 9fa6e8fb23572bcf4675a0e43af8ac40356bfbc64a080f36e93844b49b5a2d69
    Source Schema Version 1.1
    Temporal 2023-04-01/2025-11-30

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