I'd complain as well. Obviously forgot that he treat human beings not pieces of them.
What a terrible attitude? If he doesn't understand your condition, then he shouldn't question your medication.
I have a hand-out for my doctors. I typed it up with all the medications, and all the doctors I see. I have a family history on it as well.
I hand it to the doctors when I go in, and most of them seem to be accepting of it. It helps to get right to the heart of the matter.
I hate going to doctors, and I've had the odd experience like you just had, and it upsets me greatly.
Hugs.