Sorry you had such a crummy experience. The only neurologist I have seen so far who even took me seriously was the one at Mayo, but it was at their main hospital in Rochester, Minnesota. In my case, I did need the expensive testing because no one else had bothered to look into my autonomic and other neuropathy symptoms other than a brief nerve conduction study.
I saw Dr. Joon Uhm, by the way. I think you can look him up on Mayo's website.
fanfaire