PECOS Logo - Medicare Enrollment for Providers and Suppliers

System Undergoing Maintenance

Provider Enrollment, Chain, and Ownership System (PECOS)

This website is temporarily out of service due to system maintenance.


PECOS is the application that supports the Medicare provider and supplier enrollment process by capturing provider/supplier information from the 855A, 855B, 855I, 855O, 855R and 855S forms. For information pertaining to Medicare and to Medicare provider enrollment and certification, please access the following website:

For general information pertaining to the Department of Health and Human Services, please access the following website: