If this is the billed data I think it is, then this data is super unhelpful. I have done a few different projects for providers (I am an actuary) and I could never find a good use for this data. Billed charges are a made up number, you really need the discounted data (varies between each payor and provider), and need to know what market you are in (employer, ind, Medicare, Medicaid, some kind of ACO or other agreement).
Also, a lot of what the reddit OP wants already exists in various forms (some of them you have to pay for, such as truven data). 'Bundled payments' have been picking up steam for the last five years or so, and there are public data sets that describe things like knee surgery costs in different geographic areas. I think CMS has a website that already visualizes this data as well.