Search “American Medical Response” and terms like “thousands” and you’ll find story after story of 4-5k bills, some of those from 7+ years ago.

Here’s one: https://www.reddit.com/r/personalfinance/comments/16ixoc8/i_...

And another which links to the California Assembly Bill to try to prevent this: https://calmatters.org/health/2023/12/surprise-ambulance-bil...

I didn’t receive any notice of the bill until nine months later and was told it would go to collections in 30 days. My insurance company decided to reconsider whether they would pay anything after I called them, and they told AMR they would review the case which put the clock for collections on hold for about six weeks until the insurance coughed up $3k or so.