Provider Enrollment Chain of Ownership System (PECOS) 2.0 Redesign

The Provider Enrollment, Chain and Ownership System (PECOS) is the system
that houses all provider’s enrollment and billing information.
PECOS can be used in lieu of the paper CMS-855 enrollment application to:
 Submit an initial Medicare enrollment application
 Submit changes to existing Medicare enrollment information
 Revalidate your enrollment information
 Track the status of an enrollment application
 Reactivate an existing enrollment record
 Withdraw from the Medicare Program