If these insurance companies don't pay for your hospital bills (surgeries after a car accident, ambulance ride, delivery of a baby), what are they for, then?Generally, yes, although it might vary as to how much of the cost they will pay. There might still be deductibles and co-pays. And if, for some bureaucratic or other reason, the insurance company doesn't pay, they'll send the bill to the patient, who is still responsible for paying for it. Then they can deal with the insurance company for reimbursement, which can be a bit of a pain in the butt.
By law, hospital emergency rooms are required to treat anyone and everyone who comes through their doors, regardless of their ability to pay or whether they have any insurance. Even if they're undocumented migrants, the emergency room has to take them. At urgent care facilities and private doctor's offices, they don't seem to have to follow those rules and can turn people away.
This has the effect of undermining efficiency, since the emergency rooms end up having to deal with people who have mild ailments that could have been treated at an urgent care or clinic - but since some people have no other options, they show up at the ER.
Are they for quenching the insatiable thirst for money these companies have?