Not exactly. I had one doctor several years ago who was surprised to learn I am intact, but that's it. Vast majority of men my age, born in Canada, are circumcised. Wasn't a big deal, it was just "oh, ok". Wasn't even a physical exam involved, I was just asking about treating a yeast infection.
I seriously doubt most doctors would be surprised about something like size, seeing as they see hundreds (if not thousands) of different naked people throughout their careers, who come in all shapes and sizes....unless, maybe, you are monstrously huge. And even then, I doubt they would comment on it.