It's cool seeing that Turqoise Health exists. One of my first programming projects back in the day (when I was trying to get a jr role in 2014) involved building a simple version based on data.gov medicare data. The inputs were terrible and tiny (e.g. chest pain at hospital X costs ~$60k on average across 5 patients), so I was always curious what a real world version might look like.
edit: As I reflect, I'm amused to recall that this was early enough in my path that I didn't know about DB indexes, so I was very proud that I figured out how to basically roll my own indexes by pre-sorting the columns by lat and lon. I don't remember whether my solution actually prevented a full-table scan, but it felt like a major breakthrough at the time.
