Senate Judiciary Chair Charles Grassley (R-IA) is pushing CMS to step up its scrutiny of Medicare Advantage plans, asking the agency in a letter Monday (April 17) how often it audits MA plans and what steps it is taking to make sure insurance companies aren't fraudulently altering their risk scores to get more funding. MA plans are paid in part based on a risk formula determining how sick their enrollees are. There have been long standing concerns that plans may...