Medicare Data on Provider Practice and Specialty (MD-PPAS)

The MD-PPAS file assigns Medicare providers to medical practices based on the tax identification numbers and elaborates on the Centers for Medicare & Medicaid Services (CMS) provider specialty classification. This provider-level dataset is built around two identifiers: the national provider identifier (NPI) and the tax identification number (TIN).

This file is available by calendar year.

The MD-PPAS has been updated to version 2.2 from version 2.1 to reflect the following change: 

  • Providers are assigned to a Core Based Statistical Area (CBSA) using an updated zip code to CBSA crosswalk that corresponds to a given data year.  Data from 2008 – 2015 have been updated using the new CBSA crosswalk tables.

All years of data are currently released in version 2.2. Please see the MD-PPAS User Documentation, under the "Data Documentation" tab, for information on all versions of the file.

Data File Classification