Medicare Provider Revalidation List Now Online November 11, 2011 Medicaid, Medicare Centers for Medicare & Medicaid Services, Medicare, provider enrollment, provider revalidation 1 The Centers for Medicare & Medicaid Services (CMS) has posted a listing of providers who have been sent a request to revalidate their Medicare enrollment information. The listing contains the name and national provider identifier (NPI) of each provider sent a letter, as well as the date the letter was sent. Click here to view the full listing (Revalidation Phase 1). Please note there are two sheets included in this Excel workbook. CMS will be updating this list in the download section of the Medicare Provider Supplier Enrollment Revalidation page on a monthly basis. If you are listed and have not received the request, please contact Palmetto GBA Provider Contact Center at (866) 932-3901. Comments are closed.