That’s what civil court is for...the man entered into an arrangement with the hospital, they treat his ailment, he pays them. If he fails to honor his part of that agreement, well fellow, we’ll see you in court.
How does having the government involved in a private transaction help anyone involved? Simple, it doesn’t.
Yo cannot put debtors in prison. If you could, half the college students in this country would now be in the slammer.