Associate Center Director Nadereh Pourat and Emmeline Chuang, associate professor at the UCLA Fielding School of Public Health, describe the progress of 25 WPC Pilots participating in the statewide Medi-Cal initiative on coordinating medical, behavioral health, and social services. Their evaluation provides a framework for organizations seeking to address the challenges of providing care to high-need patients who frequently use high-cost services such as those without stable housing or with multiple chronic conditions.