BANGOR — Tyler Bernaiche, MD, grew up in Maine and has returned to share his skills as a colorectal surgeon with patients from Bangor to Presque Isle. Dr. Bernaiche specializes in evaluating and managing general and complex colon, rectal, and anal cancer and other concerns, including abscesses, cysts, diverticulitis, fistulas, hemorrhoids, inflammatory bowel disease, pilonidal disease and rectal prolapse.