Leapfrog Group is an independent national watchdog focused on patient safety. The Leapfrog Group, a national patient ratings program, announced today that all five Dignity Health Sacramento Market hospitals have earned an “A” Hospital Safety Grade. The Leapfrog Group is an independent national nonprofit watchdog focused on patient safety. Leapfrog assigns an “A,” “B,” “C,” “D” or “F” grade to general hospitals across the country based on over 30 performance measures reflecting errors, accidents, injuries and infections, as well as the systems hospitals have in place to prevent them.