Swedish Amercan hospital forced my wife into using Superior for a 15 minute ride home and then after insurance pays them they still come after you for the balance billing. It was incorrectly entered as non emergency and these jerks will not change it even though my wife was hooked up to life support. There is no negotiation. I was forced to use them twice and each time it was thousands out of pocket for a 5-mile ride.Don't use them unless you are rich.do User's recommendation: start a class action lawsuit against this company who preys on the sick.