MedicarePlus Advantage HMO-POS is offered to residents in Arenac, Bay, Clare, Genesee, Gladwin, Gratiot, Isabella, Lapeer, Macomb, Midland, Oakland, Saginaw, Sanilac, Shiawassee, St. Clair, Tuscola and Wayne

 MedicarePlus Advantage PPO is offered to residents in Clare, Genesee, Gladwin, Gratiot, Isabella, Midland, Oakland, Saginaw, Sanilac and Shiawassee