Are straight men comfortable with male ROLE PLAY doctor?

Yes, very comfortable although would prefer a female.

I'm gay, but I've examined a few straight men and they loved it. Not every straight man is up for that, but some are definitely OK with male doctors, even if it's not their first choice.

That being said, I have also examined and been examined by many men who I don't consider attractive at all. These are men, who may just not be my type physically, or there is a large age gap, or whatever other reason. Even when I find the patient/doctor attractive, the exam itself is professional and I'm not thinking about sexual intercourse. So for me at least man or woman, gay or straight are not relevant parameters when it comes to a play exam.

I have not yet examined or been examined in play by women, but only for the reason that there's a lot less of them searching and they're not easy to find, at least in my area. I'm definitely very interested in playing with women too.

I would not participate in this scenario.