https://www.sciencedaily.com/releases/2020/05/200504114105.htm

Every minute matters for someone badly injured in a car crash, suffering a heart attack or stroke, or needing critical care for serious birth defects, organ transplants or COVID-19.

But after those patients land, 72% of them could face a potential "surprise bill" because their ambulance provider isn't "in network" with their insurance, a new study of people with private insurance finds. When ambulances aren't in-network, they can charge whatever they see fit, and insurance is not always obligated to pay those charges in full.