What are the CMS Medicare Part D prescription drug plan regions?

The Medicare Modernization Act mandated that the Centers for Medicare and Medicaid Services (CMS) establish geographic regions for the implementation of the Medicare Part D prescription drug plans (PDP) and the Medicare Advantage (MA or MA-PD) Plans. Accordingly, CMS established 34 PDP regions made up of the 50 states and the District of Columbia. In addition, CMS also established 5 separate PDP regions for the United States Territories. Some of the 34 PDP regions are made of single states, while others are composed of more than one state.

Please click here for a complete list of all the 34 PDP regions on this site

Medicare Advantage plans are divided into 26 regions and do not overlap with the PDP regions. Here is a list of the Medicare Advantage regions:

CMS Medicare Advantage Regions
CMS MA Region No.	State(s) In the Medicare Advantage Region
MA Region 1	New Hampshire and Maine
MA Region 2	Connecticut, Massachusetts, Rhode Island, and Vermont
MA Region 3	New York
MA Region 4	New Jersey
MA Region 5	Delaware, District of Columbia and Maryland
MA Region 6	Pennsylvania and West Virginia
MA Region 7	North Carolina and Virginia
MA Region 8	and South Carolina
MA Region 9	Florida
MA Region 10	Alabama and Tennessee
MA Region 11	Michigan
MA Region 12	Ohio
MA Region 13	Indiana and Kentucky
MA Region 14	Illinois and Wisconsin
MA Region 15	Arkansas and Missouri
MA Region 16	Louisiana and Mississippi
MA Region 17	Texas
MA Region 18	Kansas and Oklahoma
MA Region 19	Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota and Wyoming
MA Region 20	Colorado and New Mexico
MA Region 21	Arizona
MA Region 22	Nevada
MA Region 23	Idaho, Oregon, Utah and Washington
MA Region 24	California
MA Region 25	Hawaii
MA Region 26	Alaska