Robert Myrtle, Ellen Riley and Beth Zachary have joined the board of directors at Valley Presbyterian Hospital in Van Nuys. Myrtle is professor of public administration at the Sol Price School of Public Policy at USC. He served on multiple boards previously, including the Los Angeles County’s Hospitals and Health Services Commission, Scan Health Plan and Huntington Medical Foundation. With more than 30 years of experience in the health care industry, Riley has served as senior vice president of Kaufman Hall and has worked with academic medical centers, community hospitals and health systems. Zachary has served as chief executive of Adventist Health’s Southern California Region, with more than 35 years of experience at Adventist alone. “Their vast health care knowledge will serve as a collective strength as we strive to achieve even better outcomes and experiences for all those we serve,” Dr. Gregory Kay, chairman at Valley Presbyterian Hospital, said in a statement.