If you're closer to the Ann Arbor or Howell area, I suggest Huron Gastro. I had great luck with them while I was there. My doc was awesome and his staff did everything they could to make me comfortable.
Pan-colitis and GERD diagnosed May 2003
Osteopenia diagnosed Feb 2006
Status: Flaring :(
40mg pred, Asacol 12 per day, Azathioprine 75mg, Rowasa, Canasa, Aciphex, Forvia, and Pro-Bio