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Medicare Administrative Contractors

CMS relies on a network of MACs to process Medicare claims, and MACs serve as the primary operational contact between the Medicare Fee-For-Service program, and approximately 1.5 million health care providers enrolled in the program. MACs enroll health care providers in the Medicare program and educate providers on Medicare billing requirements. MACs also handle claims appeals and answer beneficiary and provider inquiries.

– Part A and Part B MAC Jurisdictions

– Home Health and Hospice (HH+H) MACs

– Durable Medical Equipment (DME) MACs