Medicare Administrative Contractors (MACs)
A MAC is an organization that contracts with CMS to oversee the Medicare Program within a specified jurisdiction. MACs are multistate, regional contractors responsible for administering both Part A and Part B claims.
MACs that work with Original Medicare include:
- Part A/B Medicare Administrative Contractors (A/B MACs)
- Durable Medical Equipment Medicare Administrative Contractors (DME MACs)
- Home Health and Hospice Medicare Administrative Contractors (HHH MACs)