Our Medicare Advantage service area

Our Medicare plan service area map

The WellFirst Health — Provided by SSM Health Plan — Medicare Advantage service area includes Madison and St. Clair counties in Illinois, plus St. Charles, St. Louis and Warren counties and St. Louis City in Missouri. You must live in one of these areas to join our plan.

Questions? Contact us.

Senior man looks over paper as he makes a phone call


Talk with our Customer Care Center at 877-301-3326 (TTY:711).

Not a member?

Talk with one of our Medicare sales reps at 833-942-2158 (TTY:711) You can also call to ask for information in alternate formats and languages. 
View our Medicare disclaimer.
Updated: 1/30/23