[astrophysician]

Unfortunately not my experience -- went to nearest ER for sudden and agonizing abdominal pain, got some basic pain meds, got a CAT scan to diagnose pneumonia, was sent home within a couple of hours (lots of waiting).

Turned out the hospital was not in network, they charged me $15,000 (including $10,000 for a "level 5" ER room stay, which is twice the most expensive price listed on the OP's website and is 10x the local average price for that service, despite the fact that my experience could not possibly have been Level 5 service). Eventually they just sold the debt to a collections agency. I tried to fight but they didn't seem to care, and why would they? They already sold the debt!