A question I have is what type of practitioner does one go to for a psychological exam? Do you go to a psychologist? A therapist? A psychiatrist? I would think a psych exam given by a psychologist and a psychiatrist could be quite different. I think the pdoc would be more focused on biology and meds. The psychologist, less so. My mother recently had a full work-up from a neuropsychologist. She was referred there by her GP, who sent her there because of my mother's poor memory symptoms. So a good place to start may indeed be your GP, who can do an initial assessment of your symptoms and determine what type of specialist is best that you see for the exam. And if you need a referral, the GP can give you one.

(If you want a physiological exam, that could probably be done by your GP, if it is the same thing as a physical exam with bloodwork, etc.)