I fully understand your frustration, having been there, so let me assure you that whatever it takes to get your current MRI in front of the eyes of Dr. Feigenbaum, do it! I "lost" five years of my life before he restored my health, so as you may expect I am somewhat biased. However, he has a proven track record, and you must put forth the effort to not only obtain a proper diagnosis but to follow through with the suggestions he makes for recovery.
"Bridges"