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Medicare Provider-Supplier Enrollment

This section is designed to provide Medicare enrollment information for providers, physicians, non-physician practitioners, and other suppliers.  Please review the downloadable fact sheets below to learn more about Medicare provider and supplier enrollment.

CMS has established Internet-based Provider Enrollment, Chain and Ownership System (PECOS) as an alternative to the paper (CMS-855) enrollment process. Internet-based PECOS will allow physicians, non-physician practitioners and provider and supplier organizations to enroll, make a change in their Medicare enrollment, view their Medicare enrollment information on file with Medicare, or check on status of a Medicare enrollment application via the Internet.  For more information about the Internet-based PECOS, please select the "Internet-based PECOS" link to the left.

For information regarding DMEPOS accreditation, Competitive Acquisition and surety bond information, please select the "DMEPOS Enrollment" link to the left.

Use the Frequently Asked Questions (FAQ) link above, or visit, to get answers to commonly asked questions about provider and supplier enrollment and help with navigating various sections of this Web site.

Contacting your Medicare Administrative Contractor (MAC)

If you have enrollment questions, questions about completing a Medicare provider enrollment application or need to know where to send your completed Medicare application, please select the MAC Provider Enrollment Contact Information link below in the Downloads section. You will find each state's MAC, with their contact telephone numbers, mailing addresses and websites.