I would start with looking for a knowledgeable doctor. You might hav eto call offices and ask questions or email if they have that set up. or stop in and chat..PT clinics can be good resources too for finding good Drs. They should know who is up on things & may have more time to chat if they aren't busy.. You may find out better info at PT places... While most drs office staff will talk up the dr I'm sure..

Maybe -
physiatrist is a medical doctor who specializes in physical medicine, rehabilitation, and pain medicine. These spine specialists focus on the body's musculoskeletal system, which includes bones, joints, muscles, ligaments, tendons, and nerves.

or DO
[Osteopathic medicine provides all of the benefits of modern medicine including prescription drugs, surgery, and the use of technology to diagnose disease and evaluate injury. It also offers the added benefit of hands-on diagnosis and treatment through a system of therapy known as osteopathic manipulative medicine. ]
http://www.aacom.org/become-a-doctor/about-om

[DOs receive special training in the musculoskeletal system, your body's interconnected system of nerves, muscles and bones. By combining this knowledge with the latest advances in medical technology, they offer patients the most comprehensive care available in medicine today.]
http://www.osteopathic.org/osteopath...s/default.aspx

I'm surprised no MRI was done at all yet.. just to check for any visual causes that might show up.. that is usually one of the first things, to rule out possible spine/bones causes..