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.

The Medicare Fee-For-Service Public Provider Enrollment dataset includes information on providers who are actively approved to bill Medicare or have completed the 855O at the time the data was pulled from the Provider Enrollment, Chain, and Ownership System (PECOS). The release of this provider enrollment data is not related to other provider information releases such as Physician Compare or Data Transparency. Note: This full dataset contains more records than most spreadsheet programs can handle, which will result in an incomplete load of data. Use of a database or statistical software is required.Resources for Using and Understanding the DataThese files are populated from PECOS and contain basic enrollment and provider information, reassignment of benefits information and practice location city, state and zip. These files are not intended to be used as real time reporting as the data changes from day to day and the files are updated only on a quarterly basis. If any information on these files needs to be updated, the provider needs to contact their respective Medicare Administrative Contractor (MAC) to have that information updated. This data does not include information on opt-out providers. Information is redacted where necessary to protect Medicare provider privacy.