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Processing the CMS-855O Medicare Enrollment Application – Enrollment for Eligible Ordering, Certifying Physicians, and Other Eligible Professionals

Guidance for providers and suppliers in completing the Form CMS-855O application and MACs in processing Form CMS-855O application.

Download the Guidance Document

Issued by: Centers for Medicare & Medicaid Services (CMS)

Issue Date: January 01, 2020

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DISCLAIMER: The contents of this database lack the force and effect of law, except as authorized by law (including Medicare Advantage Rate Announcements and Advance Notices) or as specifically incorporated into a contract. The Department may not cite, use, or rely on any guidance that is not posted on the guidance repository, except to establish historical facts.