oh also, to the OP:
Find a doctor friend and ask how much research they've done. The fields are VERY VERY different. Practicing doctors essentially implement policy; they don't go out and collect data from controlled experiments. (They might collect retroactive data and give it to research scientists and statisticians, but that's more like sociology than biochemistry. The two ways of operating are not the same standard.) A really, truly smart doctor will admit what they don't know, but that's not really kosher to do in front of 95% of patients because they want the reassurance of thinking their practitioner is confident in their advice.
I got into med school and decided not to go in part because that principle really annoyed me... I would rather question things and design experiments to answer my questions than parrot accepted policy. It was a failing of mine, because I'd have a shade more income by now if I hadn't made that decision.