[programmertote]

It is already happening. NYU Langone has been pushing hard on people to 'see' the doctors online for small stuff like allergies and fever. I wouldn't be surprised if this practice eventually extends to replacing doctors with a semi-automated (human-computer based) system .

For what is worth, a physician assistant can diagnose quickly (and they can be assisted with a ML/rule-based diagnosis system that is trained on something like "Pocket Medicine: The Massachusetts General Hospital", which is what most doctors in training use as a handbook) and escalate the difficult ones to the specialist doctors.