well, look it on on thevault.com or salary.com or whatever. they do list pretty high salaries for anesthesiologists, heart surgeons, OB-GYNs, etc. BUT,
1. these same websites also list high airline pilot salaries. in addition, those "top 10 highest paying careers" lists always include airline pilot near the top. but we know in reality that's kind of deceiving because while there ARE many older legacy pilots earning that much, many more of us are earning waaaaaaay less. so it's probably the same way with docs. maybe.
2. docs have to pay high malpractice premiums. I've read that many of them are swayed away from the career or away from certain higher paying specialties (like OBGYN) because of the higher premiums.

I have a friend who works at a dentist.. the head dentist there is an orthodontist maxillofacial whatever, you know the specialists who perform oral surgery? well apparently his annual income is into the 7 figures. I don't think that's common, but even if it were, I'm not sure I could endure looking into people's mouth diseases all day long every day. I can't even listen to the descriptions of the gross things she sees without puke traveling halfway up my esophagus.