Trinity Health IHA Medical Group, Colon & Rectal Surgery - Oakland Campus specializes in colon and rectal surgical treatments. Our physicians are highly trained and board-certified in their respective fields, with several doctors receiving "Top Docs" honors by Hour Detroit Magazine. Trinity Health IHA Medical Group, Colon & Rectal Surgery's main office is located at the Michigan Heart and Vascular Building on the campus of Trinity Health Ann Arbor. Physicians offer surgery in Ann Arbor, Livonia and Pontiac.