Physician quality ratings from 2012–2014 claims data from Medicare fee-for-service, Anthem Blue Cross, Blue Shield of California, and United Healthcare was publicly released by the California Healthcare Performance Initiative System (CHPI) in late March. The one- to four-star ratings are on and allows patients to search ratings on around 10,000 California physicians. This report measures how physicians performed in providing particular recommended tests in 2012–2014; it is not intended to be an indication of overall physician quality. For more information about the CHPI rating methodology, go to Physicians can contact CHPI at