Fifteen regions in the United States assigned to Medicare Administrative Contractors (MACs) for receiving and processing insurance claims for Medicare Parts A and B.
Medicare Parts A/B Jurisdictions of Medicare Administrative Contractors (MACs) .
Jurisdiction 1: American Samoa, California, Guam, Hawaii, Nevada, and Northern Mariana Islands.
Jurisdiction 2: Alaska, Idaho, Oregon, and Washington.
Jurisdiction 3: Arizona, Montana, North Dakota, South Dakota, Utah, and Wyoming.
Jurisdiction 4: Colorado, New Mexico, Oklahoma, and Texas.
Jurisdiction 5: Iowa, Kansas, Missouri, and Nebraska.
Jurisdiction 6: Illinois, Minnesota, and Wisconsin.
Jurisdiction 7: Arkansas, Louisiana, and Mississippi.
Jurisdiction 8: Indiana and Michigan.
Jurisdiction 9: Florida, Puerto Rico, and U.S. Virgin Islands.
Jurisdiction 10: Alabama, Georgia, and Tennessee.
Jurisdiction 11: North Carolina, South Carolina, Virginia, and West Virginia.
Jurisdiction 12: Delaware, District of Columbia, Maryland, New Jersey, and Pennsylvania.
Jurisdiction 13: Connecticut and New York.
Jurisdiction 14: Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont.
Jurisdiction 15: Kentucky and Ohio.