I haven't heard his name mentioned by anyone here - but he could be good anyway.
It might be one of those meet them and decide after you talk with them things.

Possibly you can email, fax or even call his office and ask for specifics on how many TOS/Brachial plex surgeries he has done and how long has he been doing them??
If you have a fax that might be the best way to get the answers.

why spend money on a visit if he isn't well versed in TOS experiences.