Unfortunately, in medicine, there is evidence that just because a computer program is better then a Dr at diagnosing a patient is no guarantee it will be used. The classic example here was the MYCIN expert system developed in the 1970s. MYCIN was shown to outperform infectious disease experts by 1979 in a blind testing:

>... Eight independent evaluators with special expertise in the management of meningitis compared MYCIN's choice of antimicrobials with the choices of nine human prescribers for ten test cases of meningitis. MYCIN received an acceptability rating of 65% by the evaluators; the corresponding ratings for acceptability of the regimen prescribed by the five faculty specialists ranged from 42.5% to 62.5%. The system never failed to cover a treatable pathogen while demonstrating efficiency in minimizing the number of antimicrobials prescribed.

https://jamanetwork.com/journals/jama/article-abstract/36660...

https://en.wikipedia.org/wiki/Mycin

A lot of those efforts were based around expert systems and failed for many of the same reasons many other expert systems suffered from.

I would suggest that a lot of medical questions are now answered by Dr. Google which implicitly does a lot of behavioral modeling / statistics in their machine learning and is already very successful.