--a good neurologist who is willing to go outside the box (hard to find, of course). But shuch a person would hopefully not assume that a normal MRI of the lumbar spine means there is no possible nerve impingment somewhere else.

I'm sure there are some good ones out there, but I personally have not found orthopedists very helpful.

A good physiatrist/physical medicine physician might be a good choice, as they tend to be trained in mutliple modalities and more wholistically.