Robert K. Ross, M.D., is president and chief executive officer for The California Endowment, a health foundation established in 1996 to expand access to affordable, quality health care for underserved individuals and communities, and to promote fundamental improvements in the health status of all Californians. The Endowment makes grants to organizations and institutions that directly benefit the health and well-being of the people of California. Prior to his appointment in September 2000, Dr. Ross served as director of the Health and Human Services Agency for the County of San Diego from 1993 to 2000. Dr. Ross has an extensive background as a clinician and public health administrator including service as Commissioner, Philadelphia Department of Public Health; medical director for LINK School-Based Clinic Program, Camden, New Jersey; instructor of clinical medicine, Children’s Hospital of Philadelphia; and faculty member at San Diego State University’s School of Public Health. Dr. Ross has been actively involved in community and professional activities at both the local and national level, serving as a member of the National Vaccine Advisory Committee, and on the boards of the National Marrow Donor Program, San Diego United Way and Jackie Robinson YMCA. Dr. Ross received his undergraduate, masters in Public Administration and medical degrees from the University of Pennsylvania in Philadelphia.