Read more. Serving Michiana from Mishawaka Medical Center, plus additional services available in South Bend and Plymouth. Mishawaka Medical Center Medical Office Building 611 E. Douglas Rd., Ste. 123 Mishawaka, IN 46545 p: 574.335.6216. Plymouth Medical Center 1915 Lake Ave. Plymouth, IN 46563 p: 574.948.4000. For your added convenience, we also offer mammograms and breast health consultations ....