In my experience, we don't need ML/AI to replace doctors. A good flowchart would do it. When your condition is on their standard list of diseases, the medical system (at least here in the UK) is a marvel of bureaucracy. Everybody works together with perfect coordination, to deliver the standard treatment at the lowest cost possible. Patient time or comfort isn't a priority, but it gets results. But as soon as you stray from their flowchart, the system is completely useless. Nobody is allowed to think for themselves, because any deviation from procedure would make the bureaucracy machine break down. As far as I can tell, the main purpose of the extensive doctor training is to raise barriers to entry and keep doctor wages up.