If you still have problems, email us at MyMidMichigan@midmichigan.org or you can call our MyMidMichigan Patient Support Line at (855)476-1298. Return to Top. MyMidMichigan Support. Phone (989) 839-6299. Toll Free (855) 476-1298. Weekdays 8:30 a.m. to 5:30 p.m. MyMidMichigan Username. Password..