You might try Snorkel. The gist is that domain experts write rules and those rules are fed into ML. If that company doesn't work, I'm pretty sure there are alternatives. Or maybe they had their work in a Python library... it's been a while.

Compared to traditional ML, the benefit is that you're involving the subject matter experts more and giving them a say more directly. That tends to ensure that they're bought in to the approach. Having been in healthcare ML for a while, getting buy-in can be very challenging.