MAC Responsibilities
CMS uses MACs as the primary contact between you and the Medicare FFS program.
MACs oversee many activities, including:
- Processing Medicare FFS claims
- Making and accounting for Medicare FFS payments
- Enrolling providers
- Handling reimbursement services and auditing institutional provider cost reports
- Handling redetermination requests (first-stage appeals process)
- Answering your questions
- Teaching you about Medicare FFS billing needs
- Setting up local coverage determinations (LCDs)
- Reviewing medical records for selected claims
- Coordinating with CMS and other FFS contractors
