health care providers

Im searching for an organization that oversees the health care providers. so many times I go to have something done where they say my insurance will cover it only to have them bill me later for what the insurance company didn't pay. This is not fair to the consumer and seems decieving. Also the Health Care industry does not fall under A Consumer Protection Act so the health care providers are free to charge what ever they want and the consumer gets stuck paying the bill whether they like it or not