The ones that let them not tell you how much they will charge you for a service until after they provide it, and then still demand payment (and have the governm

The ones that let them not tell you how much they will charge you for a service until after they provide it, and then still demand payment (and have the government enforce that demand)? (I'm pretty sure that's not what the person you were replying to is going for - but it is a very problematic piece of the regulatory environment which is unique to hospitals)