The California Healthcare Performance Information System is a public benefit corporation officially launched at the end of 2012 to serve as a voluntary multi-payer claims database. CHPI was designated as a CMS Qualified Entity in February 2013. As of June 2017, CHPI has taken in several years’ worth of CMS Fee-for-Service data and commercial claims (HMO, POS, PPO, Medicare Advantage products) from the three largest health plans in the state (Anthem Blue Cross of California, Blue Shield of California and UnitedHealthcare of California). Discussions with other data sources are underway. In addition, CHPI publicly reported physician-level quality ratings (MY2014 and MY2012) in March 2017. In 2013, CHPI acquired the nation’s largest system for evaluating and publishing medical group ratings based on the patient’s experience, the Patient Assessment Survey (PAS). This survey, which measures patients’ experience with their medical groups, began under a prior collaborative in 2001. The 2014 medical group ratings were published in January 2015.