We wanted to add some links in hopes this may help others find a Doctor in this area of surgery . Not sure if there is any top doctor that deals with just PNS OR Face Pain Stimulation only.
I think most also do SCS and Neuro Stims for backs neck and other areas. It would be wise to ask this when contacting your pain management specialist , or Doctor. At least if they have knowledge of T.N , Neuro Stim for face pain etc....
http://www.poweroveryourpain.com/sb/pain_specialist
http://www.mymedpages.com/pf/search.do
Peace
BMW