I don't know. I might be wrong

As far as I know your son, of course by reading your posts, l kind of feel it is a great waste for your son to be a medical doctor. Your son is outstanding with outstanding personality or maybe outstanding characters too. He should be more than a doctor if he can get someone as his memtor. He might be for instance a hospital administer or even secretary of health department for America. You may share what I think with son. It may be helpful. Thanks