ZIPCODE TO CARRIER LOCALITY FILE (see files below)
This file is primarily intended to map Zip Codes to CMS carriers/Medicare Administrative Contractors and localities. This file will also map Zip Codes to their State. In addition, this file contains an urban, rural or a low density (qualified) area Zip Code indicator.
For a one-stop resource web page focused on the informational needs and interests of Medicare Fee-for-Service (FFS) providers, including physicians, other practitioners and suppliers, go to the Provider Center.