I read your post over again, and now I see that you did see a rheumatologist.
Perhaps, if you did not like this doctor, there might be another good one in your era?
And I would insist with the PCP that you have a neurologist on the case working with you. If your regular doctor does not agree, then perhaps you should find another primary care doctor.
There are many good smart people on this board that will give you some links to good references on neuropathy.