Many had good things to say about Dr. Al-Omran at St. Mikes Hospital in the Toronto area.

The neurotalk forums are invaluable as the forum format lends itself much better to being able to search up past posts and view replies in a timeline based manner. If you are looking for specialists in a particular area, the "Thoracic Outlet Syndrome (TOS) Support Group" on facebook may be able to offer recommendations as well. I only bring up the facebook group because someone literally posted about toronto doctors half a month ago, and I remember they were able to get some feedback about it. (that's where I got the recommendation for Al-Omran from). Its a bit more chaotic to sift information from, but its large member base has its benefits.

I've been lurking here since June, mainly to absorb information about the condition. I developed it in May, and since starting physical therapy on June 15th, have seen a dramatic reduction in my symptoms. Much of the information on the forums here has been very helpful!