One of the terrific aspects of MIT in those days was the enormous variety of experimental work that either took place there or was talked about in seminars by outside speakers aggressively recruited by the faculty.
If someone is interested in medicine and also in physics and they like working with people and communicate well with others, I would strongly encourage them.
And I'd say one of the great lessons I've learned over the past couple of decades, from a management perspective, is that really when you come down to it, it really is all about people and all about leadership.