1. Medicare Advantage plan switching: exception or norm? Author(s): Jacobson, Gretchen, authorNeuman, Tricia, authorDamico, Anthony, author Publication: Menlo Park, CA : Henry J. Kaiser Family Foundation, September 2016 Subject(s): Insurance, Pharmaceutical Services -- statistics & numerical dataMedicare -- statistics & numerical dataMedicare Part C -- statistics & numerical dataUnited StatesUnited States.