One thing I (and do often) can suggest is the directory of certified pain specialists, maintained by the American Board of Pain Medicine. With the exception of some notable specialist in the field who were "grandfathered in," all applicant must first complete a one year fellowship in pain medicine - after their residencies - and then sit for an 8 hour written exam.
Here's its search engine
http://www.association-office.com/ab...dir/search.cfm Please note that each doctor is listed with a specialty or origin, i.e. the pre-fellowship residency. As a rule, for RSD/CRPS, I would avoid people coming from a physical medicine background, and lean instead towards neurology, internal medicine, or the like, recognizing that the bulk of practitioners will have a background in anesthesiology, which is okay, but may not be great when it comes to the cutting edge stuff.
That said, searching under Utah reveals a pain specialist trained in anesthesiology who is regarded by some as one of the better CRPS docs in the country:
Lynn Webster, MD
Life Tree Pain Clinic
3838 S 700 E Ste 202
Salt Lake City, UT 84106
801-261-3341 (phone)
801-892-5140 (fax)
I hope this is useful.
Mike