I can only say from experience that Hopkins is thorough. My neurologist there was extremely competent. When the findings confirmed a suspected hereditary neuropathy they pretty much lost interest as there is no real treatment, but my skin biopsy showing no small nerve fibers has been a blessing as far as pain management.
Whether it is worthwhile for you would have to be weighed against the costs and inconveniences involved. I live within 60 miles. Unfortunately there aren't always answers as this forum shows, but if you an interesting case, Hopkins may be the place.