My two cents....
1) Do a lot of listening, research, and ask a lot of questions. Don't be afraid to ask tough questions as you are paying the Doctor for his expertise.
2) Get a second opinion before doing any medical procedures. Do a lot of research and seek out recommendations from others who have gone through it. I know a handful of players that have been through it and all of them used one of two Doctors that required a plane ride. I'm guessing there is a reason for that. Just my experience.....
Good luck and I hope you are feeling better soon!