Undoubtedly, Dr. Hanauer at the University of Chicago is the leading expert in Crohn's, but my insurance would not cover U of C.
My Doc is Dr Robert Craig of Northwestern. He was head of Gastro for many many years at Northwestern and works with the top surgeon in the midwest (Dr Steven Stryker) on many of his cases.
I have found Dr Craig to be extremely caring and compassionate. He calls his patients personally with test results and he is ALWAYS available for random calls.
Finally, it has been my experience that he is always out ahead of the curve in terms of crohn's treatment. He knows all of the latest in research and will educate his patients on their options. He is always looking for the best long term solution to your symptoms....He avoids quick fixes that may lead to long term problems.
Dr Craig is amazing and I am already dreading the day he retires
Good luck in your search - keep us posted