Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • Opt Out Affidavits

    Metadata Updated: June 28, 2025

    ATTENTION USERS

    Some Providers' Opt-Out Status may end early due to COVID 19 waivers. Please contact your respective MAC for further information.

    For more information on the opt-out process, see Manage Your Enrollment or view the FAQ section below.

    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 June 28, 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 June 28, 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 2021-12-22
    Language en-US
    Data Last Modified 2025-06-27
    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 c2e42fc6-6996-48d2-8e42-4b7a5edce6dc
    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 f6f9a050703684d5fc5ad288de26a0650e0eeb390dd117556c559848b09989df
    Source Schema Version 1.1
    Temporal 2023-04-01/2025-05-31

    Didn't find what you're looking for? Suggest a dataset here.