My clinic does deal specifically with back and neck pain. I am not sure how broadly other physiatrists might be able to work with rehab. Here's a website that may have some more info:
http://www.aapmr.org/patients/aboutp...ysiatrist.aspx **
The other thing is that neck injuries can be very tricky to detect. In my case, even before concussion, I had a pinched nerve in my neck that never made my neck feel bad at all. The pain referred to my shoulder blade, headaches, and tingling/numbness in my fingers.
I also recently read of a baseball player who recovered from lingering pcs symptoms such as dizziness and imbalance by working with a physical therapist who manipulated the cranio-sacral joints.
http://sports.yahoo.com/mlb/news?slug=ge-koskie022409
What I am trying to say is that because there are nerves involved, a neck injury may cause other symptoms besides just straight-up pain in the neck area.
I do hope you're able to find the answers you're looking for. I am an English teacher, and my concussion has been extremely disruptive to my self-concept because I have so much trouble doing things that I consider core to my identity such as reading, writing, and multi-tasking. It is not just a simple physical issue.