So my advice is that if you're fair-skinned and/or of northern European ancestry, don't grow up in California or similar places. My first dermatologist visit was at age 30, and now at 70 I set up regular appointments every four months, and there's always something to be looked at.
I had Mohs on two sites the same day, forehead and scalp about 5 inches apart, back in 2009. They were both kinda big, I was there from 8 to 4, and afterwards the surgeon told me "I sure won't let anyone talk me into a doubleheader again."
I still see him and he's done a couple more. It is a round-robin sort of thing: the first patient's margins are examined while the second's initial excision is done, etc. My surgeon might do 3 or 4, depending on size and difficulty. More than that, and you run the risk of some unforeseen problem delaying a lot of people.
Basal and squamous lesions aren't emergencies, so you have time to consult another if you have more near you. How old are you, by the way, and do you live in a big city or somewhere where resources are not so plentiful?
Regarding doctors' personalities: I don't care if he's an Olympic a**hole if he's great at what he does. However, the communication has to be great, in both directions, and the staff has to make up for the personality disorder.