And exactly what does teaching the beliefs of evolution have to do with practicing medicine?
Their beliefs will dictate that they must bleed me with a leech, rather than use modern medicine, because it will conflict with the Quran.
Pretty much everything. Even some of the most rabid "anti-evolutionists" agree that what they call "micro-evolution" happens (bacterial antibiotic resistance among other things). There is simply too much lab evidence to deny the effect of "some" form of evolution as regards medicine.
Modern genetic science and evolutionary theory are inextricably linked. If a doctor is to be trusted to diagnose or do research on genetic issues he or she would have to understand evolutionary theory as well.