My doctors are in an office which always has had at least three doctors, and now may have a fourth. I've actually been seen by all of them. Sometimes I've started a physical with one, but for whatever reason, one needed to step out (maybe to take an emergency call, maybe they switched patients because one's specialty was needed for someone else, whatever,) and another one finishes the physical with me. They are two males and one female doctor, and maybe the fourth, now, is a female. I'm fine with seeing whichever of them. It's certainly better than sitting there waiting forever for the one I started with to come back.
Once, I started with one of the male doctors for the questionnaire, then he stepped out and a female came in, she asked me to undress and she did the "physical" part of the exam, then the male came back for the final bit, then I got dressed and they both saw me off in the lobby. And, of course, there have been times when one will want another one to come and look at something on me somewhere. That even happened where I got undressed and then three of them came in to look at something, while I was naked. It always works out fine, as far as I'm concerned.
They also sometimes have medical students who sit in on physicals, to observe or even to perform the exam. But, they ask permission from the patient, first.