Well I can attest to this...we've twice rang ambulances, once they came out, checked everythign was ok, left again (no transport $500), the other time I had a ride with lights n sirens and the green sucky pain tube, that was $700. Both times it was covered by our health insurance (we only had top extras) BUT in each state the bill was handled differently, ie our health insurance had a different arrangement with the ambulance service in each state. So you need to check how it works in your state.