How urgent is the gallbladder surgery? You REALLY want surgery to be the last possible option with RSD. Have you explored ALL possible options? I'm just saying...
My doc is not a "known" RSD doc. But, he is incredibly well versed in RSD, is dedicated to keeping up with all the latest research, and has had many RSD patients over the years. I find he is able to dedicate much more time to me than most docs would, let alone an "expert." I travel into a major city to consult with an RSD specialist, as well. Absolutely, pursue the best care possible, but don't overlook all your options locally. When you have an emergency, it's priceless to have a doc nearby you can count on.