Health care fraud must stop. The patients will no longer be able to get decent services and will suffer terribly. Protect yourself, your family, your job and protect the profession. Every professional journal in your field advises that if you are in a situation in which you must violate the law or standards governing your license, and you stay, you are responsible for your actions. The only course of action which allows you to retain your integrity is for you to get another job, however unpleasant or difficult that may be.
Nobody wishes to change their employment if they feel comfortable at their employment.
If you stay at the agency, you run the risk of yourself being found guilty of some federal or state law, or of being found guilty of violating your license, depending on the circumstances in your situation. There have been nurses used as scapegoats for the agencies who instituted the illegal activities. If they can, they'll blame it on you. You need to voice your objections, document your objections in whatever way you can, get out and report the criminal activity to the authorities. Take the positions that are available from employers willing to hire you and get on with your life.