hairtransplantnetwork.com (go to the discussion boards and research)
This place will give you a list of doctors with pictures, testimonials and discussion boards. If a doc doesnt meet certain criteria that is above standard for todays HT practices they are not recommended. The site is full of info.
Stay away from the Bosley's and MHR's. They are about $$$ and not about the care of the patient. (Doing multiple HT"s in one day, not using microscopes for donor hair separation, etc). This site will have all the info you need. Thank me later