There's a lawyer who posts on here sometimes under the name Dave2GA. You might try PMing him about this. It seems like the doc could be brought up on charges of assault and battery. At the very least he ought to recieve a very scary looking letter from someone in the legal field.
I would post your story on all the physician rating sites out there as well, just to give other people some sort of warning.
I'm really fuming on your behalf. This sort of story makes me wonder if it's not a good idea to take a cannister of mace into some medical appointments.