Man Pleads Not Guilty in Medicare Fraud Case A South Florida man has pleaded not guilty to conspiring to launder tens of millions of dollars in a massive Medicare fraud scheme. Prosecutors say 46-year-old Oscar Sanchez conspired to send money from Medicare fraud to shell companies in Canada before it was passed on to a Trinidad bank and then to Cuba. Prosecutors say he gave cash to the fraud ringleaders who did not want their money traced. Sanchez was born in Cuba and is a U.S. citizen. He appeared in federal court in Miami on Friday, and his attorney entered the not guilty plea. Sanchez is being held in federal custody because prosecutors consider him a flight risk. Prosecutors are seeking more than $22 million in property from Sanchez. If convicted, he could face 13 years in prison.