If this is a State of California Insurance fraud issue relating to physicians, you can contact the Department of Insurance to report the fraud. There is not enough information to determine what type of fraud has been perpetrated but you could also gather all your documents and go to a plaintiff's attorney specializing in class action cases to see if it can be filed civilly if the criminal investigating agencies are not interested in pursuing it. You should consult with an attorney either way so you can assess what you have and get help presenting it criminally or filing it civilly. Good luck.
Suggest that you contact the FBI.
The above is not intended as legal advice. The response does not constitute the creation of an attorney client relationship as this forum does not provide for a confidential communication.
Sign up to receive a 10-part series of useful information and legal advice about the divorce process.