Who are the MACs

On this page:

• Current Maps and Lists
• A/B MACs and HH+H Areas
• DME MACs

Current Maps and Lists

To find out who the current A/B and DME MACs are, use these maps and lists to help you determine which MAC is of most interest to you.

• A/B MAC Jurisdiction Map (PDF)
• HH+H MAC Jurisdiction Map (PDF)
• DME MAC Jurisdiction Map (PDF)
• MACs by State (PDF)

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A/B MACs and HH+H Areas

A/B MACs process Medicare Part A and Medicare Part B claims for a defined geographic area or “jurisdiction,” servicing institutional providers, physicians, practitioners, and suppliers.  Four of the A/B MACs also process HH+H claims in addition to their typical Medicare Part A and Part B claims.  Please note that the four HH+H areas do not coincide with the jurisdictional areas covered by these four A/B MACs.  Learn more about the A/B MAC in each jurisdiction.

• A/B MAC Jurisdiction 5
• A/B MAC Jurisdiction 6 (Processes HH+H claims)
• A/B MAC Jurisdiction 8
• A/B MAC Jurisdiction 15 (Processes HH+H claims)
• A/B MAC Jurisdiction E
• A/B MAC Jurisdiction F
• A/B MAC Jurisdiction H
• A/B MAC Jurisdiction J
• A/B MAC Jurisdiction K (Processes HH+H claims)
• A/B MAC Jurisdiction L
• A/B MAC Jurisdiction M (Processes HH+H claims)
• A/B MAC Jurisdiction N

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DME MACs

The DME MACs process Medicare Durable Medical Equipment, Orthotics, and Prosthetics (DMEPOS) claims for a defined geographic area or "jurisdiction," servicing suppliers of DMEPOS.  Learn more about the DME MAC in each jurisdiction.

• DME MAC Jurisdiction A
• DME MAC Jurisdiction B
• DME MAC Jurisdiction C
• DME MAC Jurisdiction D

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