Opt Out Affidavits

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.
Organization: U.S. Department of Health & Human Services
Organization URL: https://catalog.data.gov/organization/hhs
Last updated: 2026-04-20
Tags: medicare, medicare advantage, original medicare, provider enrollment