Eliminating gender/color discrimination. Women get treated so badly in medical situations, even by women doctors, as do people of color, being accused of drug-seeking and such.
There's also the problem of doctors not being as widely educated as a computer can be: case in point my wife. My wife has constant shortness of breath problems. Oncologist: you have cancer, get over it (she does, but that's not the problem). Lung doctor: you have asthma, use your inhaler (it doesn't help. Cardiologist: lose weight (she can't exercise because of it). Finally sees an aerospace doctor: You don't have enough carbon dioxide in your system, it's a treatable condition. And she's doing better.
Doctors can't know everything, you'd hope they could do better though.