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Centers for Medicare & Medicaid Services

CMS has ten regional offices to assist with Congressional inquiries. For Congressional inquiries or questions specific for Medicare Part D, try contacting the Medicare Part D Plan first. Another option is to contact the CMS RO for the region of the state. Ask the CMS operator to speak with a Congressional point of contact.

The ten CMS ROs throughout the country are:

CMS RO Location States Telephone
CMS RO I Boston Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont 617-565-1232
CMS RO II New Jersey New Jersey, New York, Puerto Rico, and Virgin Islands 212-616-2222
CMS RO III Philadelphia Delaware, Maryland, Pennsylvania, Virginia, Washington, D.C., and West Virginia 215-861-4226
CMS RO IV Atlanta Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee 404-562-7500
CMS RO V Chicago Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin 312-353-7180
CMS RO VI Dallas Arkansas, Louisiana, New Mexico, Oklahoma and Texas 214-767-6401
CMS RO VII Kansas City Iowa, Kansas, Missouri, and Nebraska 816-426-2866
CMS RO VIII Denver Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming 303-844-4024
CMS RO IX San Francisco American Samoa, Arizona, California, Guam, Hawaii, Nevada, and Northern Mariana Islands 415-744-3602
CMS RO X Seattle Alaska, Idaho, Oregon, and Washington 206-615-2354
Centers for Medicare & Medicaid Services
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