There are lots of govt departments dedicated to shielding the North American taxpayer from crime
There is a special dep. called the Medicaid Fraud Control Unit which is devoted to finding and arresting firms or individuals who attempt to defraud the government and do some fraud and abuse in healthcare. Basically lots of the cases that are prosecuted by the MFCU regularly start with some information from a patient. So if any provider commends treatments or services that you may not feel are required then be on guard and be very scared.