California has a law capping hospital charges at Medicare levels for about half of the population. This is from Modern Healthcare:
A California law could serve as a model, he said. It defines the patients who qualify for assistance as those who are uninsured or making at or below 350 percent of the federal poverty line — $40,215 for an individual and $82,425 for a family of four. Those patients cannot be charged more than the hospital would receive from Medicare.
