@ wallflower – Find me a Kollel guy who’s on the level of the Rambam. The Rambam wrote the Peirush HaMishnayos when he was 22. How many are there in Israel?
As far as practicing Doctors who are tremendous Talmidei Chachamim, of course there are few. Rav Yosef Dovid Bleich is an example of one. But of standard Talmidei chachamim who are practicing doctors, there are MANY. You would be so surprised. Most of the BTW come from YU.