On January 13, 2009, CMS will hold a Special Open Door Forum to discuss the implementation of the internet-based Provider Enrollment, Chain and Ownership System (PECOS) for physicians and non-physician practitioners. Physicians and non-physician practitioners in most states can now use internet-based PECOS to enroll, make a change in their Medicare enrollment, view their Medicare enrollment information on file with Medicare, or check on the status of a Medicare enrollment application via the internet.