HC Reform Update by Mark Sanna: Federal authorities said Friday that they had arrested dozens of suspects in five states on charges of defrauding Medicare of a total of $251 million. Several doctors and nurses were among those arrested in Miami, New York, Detroit, Houston and Baton Rouge, La., accused of billing Medicare for unnecessary equipment, physical therapy and H.I.V. treatments that patients typically never received. Ninety-four suspects were indicted, and the authorities said 36 people had been arrested as of Friday morning.