I would tell your client they need to become better educated about the False Claims Act. Under the False Claims Act (FCA), anyone who knowingly submit, or causes another person or entity to submit, or knowingly makes, uses, or causes to be made or used, a false record or statement to get a false or fraudulent claim paid or approval of government funds are liable for three times the government's damages plus civil penalties of $5,500 to $11,000 per false claim.
The term "knowingly" means that a person:
1. has actual knowledge of the information;
2. acts in deliberate ignorance of the truth or falsity of the information; or
3. acts in reckless disregard of the truth or falsity of the information, and no proof of specific intent to defraud is required.
That is a summary of the Federal False Claims Act, your state should have their own regulations also. Maybe the FCA can scare your client straight. I know of a physician office who not only had to pay back $250,000 in false payments, but also had to pay a very hefty fine of close to $2 million & they lost the right to bill to Medicare, Medicaid, & Blue Cross.