Medical Economics has an article this issue that discusses whether a doctor should do his own taxes:
The answer: It depends. Certain financial situations are sufficiently complicated that you really need an accountant's expertise. And, in many cases, the hours spent doing your own taxes could be more profitably spent seeing patients.
A doctor (post-residency) who would do his own taxes and not even have an accoutant look at the tax form before sending it in is, in my opinion, being very foolish.