In cooperative health care clinics (CHCC), health care is provided to older patients in a group setting. The CHCC concept, which was developed under a research grant by Kaiser Permanente in Colorado in 1991, showed improvement in patient and provider satisfaction, as well as improved quality of care and cost effectiveness. CHCC are being replicated in other sites under a research grant from the Robert Wood Johnson Foundation. In addition to formal findings from research studies, much has been learned about factors that have promoted the success of the program.