You may want to start by joining the Aircraft Owners and Pilot's Association. I think it's $39/year and they do a jam up job on all things aviation - including medical advice. They are geared toward General Aviation. AOPA Online: Aircraft Owners and Pilots Association

There are some docs and companies that specialize in airline pilot medicals: a search of this forum should give you some leads on who is good and who is not.

Good Luck!