[RWebb]

it's too bad that doctors are human

I suppose you could ask if had a bad day, but after all you are the patient...

How about "Hey, since you're such a jerk you should be a US citizen."

or "Hey, since you're such an ass you should be a proctologist."

then leave before he can examine you

or just pivot, grab him and slam him up against the wall a few times and say "do you feel lucky today? Well, do ya, punk?"