Ninety-one suspects, including doctors and nurses, have been charged in connection with a new rash of healthcare fraud schemes aimed at bilking the government out of about $295 million, U.S. authorities said.  Attorney General Eric Holder, Health and Human Services Secretary Kathleen Sebelius and FBI Executive Assistant Director Shawn Henry announced the charges in Washington, saying they resulted from strikes targeting crime rings in eight U.S. cities that preyed on Medicare, the federal health insurance plan for the elderly and disabled.  “From Brooklyn to Miami to Los Angeles, the defendants allegedly treated the Medicare program like a personal piggy bank,” the head of the Justice Department’s criminal division, Lanny Breuer, told reporters in Washington.  Around half of the defendants were charged in Miami, the southeastern city widely viewed by law enforcement experts as the healthcare fraud capital of the United States.