#United States #Fountain Valley #MemorialCare #David Kim #Barry Arbuckle

MemorialCare Health System Transitions Leadership

On April 29, 2026, MemorialCare, a prominent integrated health system serving Orange and Los Angeles counties, made significant announcements regarding its leadership. Barry S. Arbuckle, Ph.D., who has been at the helm as CEO for over twenty years, will transition into the role of executive chairman effective July 1, 2026. Meanwhile, Dr. David S. Kim, M.D., will be assuming the responsibilities of president and chief executive officer of the health system. This decision follows a structured succession planning process initiated by Arbuckle several years ago, and shows the system's commitment to maintaining a leadership approach built on thoughtful transitions.

Resa Evans, the chair of MemorialCare's Board of Directors, expressed optimism about the leadership transition. She described Arbuckle and Kim as exemplary leaders, emphasizing the board's confidence that they will continue to strengthen MemorialCare's mission of providing high-quality, accessible, and affordable healthcare to the communities it serves.

Dr. Barry Arbuckle's Legacy

Arbuckle's journey with MemorialCare began in 1989. His tenure as CEO has been marked by transformative growth for the organization, evolving it from a hospital network into a comprehensive healthcare system consisting of four licensed acute care hospitals, over 200 outpatient care sites, and a network of more than 2,000 physicians. His leadership has consistently focused on delivering value-based care and fostering innovative health initiatives.

Under his guidance, MemorialCare has established notable programs that benefit both patients and employers, such as partnerships with major corporations like Boeing, Activision Blizzard, and United Airlines which aimed to enhance healthcare access and reduce costs. Arbuckle has positioned himself as a recognized figure in healthcare, advocating for Medicare Advantage and working on policies that aim to make care more affordable and effective.

As executive chairman, Arbuckle plans to focus on policymaking and healthcare delivery improvements, aligning with his stance on ensuring accessible care for all. He will remain instrumental in guiding Dr. Kim as he leads the operational aspects of MemorialCare's mission.

Dr. David Kim Takes the Reins

Dr. Kim, a family medicine physician, has also had a remarkable trajectory within MemorialCare. His previous experience includes significant leadership roles and clinical oversight, and he returned to MemorialCare in 2023 to lead the Medical Foundation. Now, as CEO, he will be responsible for the healthcare system's overall strategy and daily operations. Having demonstrated his dedication through various leadership roles, Dr. Kim's commitment to improving community health stands as a strong asset as he directs the organization’s future direction.

In his statements, Dr. Kim conveyed gratitude for the trust placed in him by the board and the community, highlighting the importance of teamwork among the staff dedicated to patient care. He views his new role as an honor and is enthusiastic about the possibility of pushing the boundaries of care to meet the needs of their communities more effectively.

MemorialCare operates over 200 care locations, including notable hospitals, and offers a range of specialized medical services. With a focus on innovation, they have garnered national accolades for quality care — including Healthgrades recognition and high ratings in clinical performance categories. As the leadership transition unfolds, both Arbuckle and Kim are set to collaborate closely, steering MemorialCare into a future that builds upon its commitment to health excellence.