In some areas (those with municipal ambulance services), that's exactly what happens.
In my case, I volunteer with a combination career/volunteer fire/rescue/EMS agency. Our 'operating costs' are payed by taxes, but if you use the service, you get a bill ranging from ~$100 for a routine BLS transport to ~$500 for a 'significant' ALS call (lots of drugs and advanced interventions). We don't itemize, but we do adjust billing based on what was done.
My daughter had febrile seizures as an infant. The ride in the ambulance to the hospital was ~$1k, IIRC. I don't think that she was on any sort of IV or anything, but my wife was in the back (I rode up front). (This was in Portland, OR)
In my case, I volunteer with a combination career/volunteer fire/rescue/EMS agency. Our 'operating costs' are payed by taxes, but if you use the service, you get a bill ranging from ~$100 for a routine BLS transport to ~$500 for a 'significant' ALS call (lots of drugs and advanced interventions). We don't itemize, but we do adjust billing based on what was done.