TULSA, Oklahoma - A grand jury indicted three men - including two doctors - on charges of conspiring to commit health care fraud and violating the federal anti-kickback statute, according to U.S. Department of Justice.

The indictment states Dr. Gary Lee and Christopher Parks, both of Tulsa, conspired to pay kickbacks and bribes to physicians so they would write compounding prescriptions to pharmacies the two men were affiliated with. Those pharmacies included OK Compounding LLC of Skiatook and One Stop RX LLC in Tulsa as well as two Texas pharmacies.

Lee, 58, and Parks, 57, then allegedly submitted large claims for payment to federal health care programs and private insurers and divided the profits, a news release states.

Texas physician Dr. Jerry Keepers is also named as a defendant in the indictment, charged with getting over $860,000 in bribe and kickback payments from Parks and Lee.

Prosecutors said one of the things the men would do was provide pre-printed prescription pads to doctors who would fax prescriptions in to the associated pharmacy rather than writing a prescription the patient could take to any pharmacy.

"As a result of Parks and Lee’s scheme, federal health care programs suffered a total estimated loss of at least $4.7 million," the news release states.

According to the Justice Department, the men have not been convicted of any crime but will go to trial.