How fucked up this is not withstanding, I can sort of understand that a business has costs and needs to recoup those costs if their customers fail to pay.
But, this is not just any business: it’s a non-profit that is tax exempt with the requirement that they perform charity among other requirements. Suing and putting liens on houses is not charitable.
First, hospitals absolutely need to have clear and transparent pricing. And if hospitals still want to sue people and put liens on their houses, they should lose their tax exempt status.