I got a referral to the specialist by calling the Atlanta Zoo's reptile department and also contacting the GA Herp Society. I had three different people recommend Dr. Brad Wilson in Marietta.
I don't know the vets in your area, you might try the same strategy to see who they would recommend in your area.
Have you checked these links?
Oftentimes, a clinic that primarily sees dogs and cats will have a vet on staff that also sees the exotics, but they don't see them as frequently as a vet who is a specialist. So, it gets tricky finding one.
http://www.arav.org/Directory.htm
http://www.anapsid.org/vets/index.html#vetlist