I wouldn't consider changing as he is very thorough.

I've been with Dr. Gladin for over two decades. I wouldn't consider changing as he is very thorough. On one occasion I had stomach issues that didn't seem to make sense. He asked me questions for a long time until he discovered I was quitting smoking. When asked what I was using as a substitute I mentioned peppermints. Bingo! Cause of problem!
My point is very few doctors today would take the time to make such a determination.