sentences:  Arrested again in early 1991 for parole violations and released in October, the impostor worked for four and a half years in a half-dozen medical facilities in the Los Angeles area.He earned more than $400,000, while the various medical facilities billed insurance companies and individuals approximately $5 million for his services.In 1995, he obtained a position as staff physician at Executive Health Group, a Los Angeles clinic that handled physical checkups on FBI agents and senior officials with the Federal Reserve Bank.