Mr. Panos, of Hopewell Junction, N.Y., impersonated a licensed orthopedic surgeon in Westchester County as he defrauded the companies to the tune of $876,389.97, a Justice Department release said.
At the time of the scheme, he had surrendered his medical license because of a previous indictment over fraud. Once released from prison for that conviction, Mr. Panos resumed the scheme for which he now faces a long sentence.