"The Pittsburgh Penguins announced Saturday that Crosby arrived in California on Friday to see Dr. Robert S. Bray, a neurological spine specialist, as he attempts to come back from concussion-like symptoms.

"Sidney is meeting with some of the top specialists in the country as he continues his recovery," Ray Shero, the Penguins' general manager, said in the news release."

this is taken from this article
http://www.nhl.com/ice/news.htm?id=612809&print=true

How can this specialist help? If distance, money, etc. were not an obstacle, as in Sidney Crosby's case... how are these treatments benefiting him? And what are the treatments he is receiving there?
Any opinions? Thank you!