Glossary
PECOS
The Medicare Provider Enrollment, Chain, and Ownership System used to enroll providers and manage their Medicare enrollment records online.
PECOS, the Provider Enrollment, Chain, and Ownership System, is the online platform that providers and organizations use to apply for and maintain their enrollment with Medicare. It supports Medicare enrollment applications, ownership reporting, and ongoing updates such as practice-location and reassignment changes. Providers also complete periodic revalidation of their records through PECOS to keep their Medicare billing privileges active.