Medicare Supplemental Plans Please enter a valid 5-digit zip code. Find a Medicare Supplement! Medicare Supplemental Plans (aka, "Medigap") fill the coverage gaps in Original Medicare. We'll help you compare plans so you can find the lowest rate in your area. Start by entering your ZIP code. Medicare Supplemental Plans by State Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming The content on this page was last reviewed and updated on May 10, 2018.