PECOS Basics

PECOS, the Provider Enrollment, Chain, and Ownership System, is a national electronic database for recording and retaining data on Medicare-enrolled providers and suppliers. CMS developed PECOS as a mechanism to combat fraud and abuse. When it proposed its plan to launch the use of the PECOS database in October 2001, CMS announced “it will now be possible to link providers/suppliers to the people and organizations with which they have a business relationship and to identify those involved in illegal Medicare activities.”