Yes, I am a bariatric surgeon in San Antonio. Doctors generally don't share statistics on outcomes with their patients, except in a broad sense. We would be able to tell you statistical rates of complications, and if our complication rates are similar to the rates seen in large studies. I would guess that poor surgeons generally don't come out and say that they aren't any good. The best way to get an idea of a surgeon is to talk to hospital staff that have worked with the surgeons before (like nurses, for example.) If that isn't possible, then former patients are the next best thing.
Just my opinion, though. Hope that helps.