I have a lot of dr. clients with big tax problems, ie. large taxable income. Fields which can make a LOT of money: oncology (multiple simultaneous procedures), radiology-variable, but high side is very high, some family practice docs with physician extenders do really well, some pretty awful if not well run, dermatology in the right place, cardiologists, neurosurgeons but some are nasty human beings, ER docs good plus great lifestyle. Procedures do well, but long ones are bad, short ones good, from pay standpoint. OB can be great, but demanding. GI with great office staff. Surgical subspecialites better than medicine, hands down. Reimbursement changes. Demographics change. I'd look for stuff boomers need. Plastics is really competitive. Less desirable locations do much better. Some of my richest docs are in some pretty remote places.