Even if physicians wanted to try to learn/practice/apply across different fields, there is also tremendous push-back from other specialists, and anyone who tries is mocked. In retrospect, the cabal trained docs this way so that one could never understand the full spectrum of illness and treatment because the docs are all walled off from each other.
After the first two years of medical school, all the training then becomes uber-specific to whatever field the med student wants to study. Yet another example of keeping us divided. The fault was built into the system. Thoughts?
Additionally, the hyper specialization of disciplines creates a parroting of information from other specializations that one Dr may not understand but they repeat as gospel. For example, my pain management Dr repeated every talking point about infection control and he's a neurologist. It's like a diesel mechanic getting advice from a steam powered locomotive engineer. The diesel mechanic will just go along with what the steam locomotive guy says because he knows nothing about trains much less Boyle's law and he has no desire to educate himself either.