- They found that most of the time, when the providers, the hospitals that are hosting these ambulances try to bill for the services, insurance companies, Medicare, are not paying for the services. It's challenging because they're sort of designed to be emergency rooms, and yet they're not within a hospital. And so the expenses, or the bills, are often declined. I think just one of the units considered itself an outpatient facility, and they were able to do a little bit better, financially. But essentially, all of these units required additional funding besides what they were billing for. So they were not self-sustaining.