Darren Xanthos

Darren Xanthos headshot

Darren Xanthos


Costa Mesa, CA

[javascript protected email address]

(714) 549-2790

Darren Xanthos has extensive experience designing and implementing programs that provide healthcare to vulnerable populations.

During his time at HMA, Darren has helped a variety of organizations meet their healthcare goals. He has served as the interim executive director for Behavioral Health and Chemical Dependency at a large regional hospital system in Southern California, working to improve patient flow and maximizing the use of available resources, while building the framework for a regional mental health and wellness clinical institute. He has also worked with managed care organizations to build new programs and integrate new regulatory requirements into existing frameworks, as well as manage strategy for benefit administration and vendor selection. Darren has also helped a county public health system to develop a strategy around revenue cycle management and revenue capture.

Prior to joining HMA he was at CalOptima, a county organized health system that administers health insurance programs for low-income families, children, seniors and persons with disabilities in Orange County, California. As director of Business Integration and Program Implementation, he directed key initiatives, such as the Dual Demonstration Coordinated Care Initiative, implementation of the Title XIX behavioral health benefit, and development of the Medi-Cal expansion benefit. Under his leadership of the program policy and program development departments, the organization launched its Process Excellence and Business Intelligence functions.

Prior to his work at CalOptima, Darren was the senior director of Community Care Management at Beacon Health Strategies, LLC, where he helped expand Beacon’s national presence by launching its first West Coast contract, a joint venture with CalOptima to serve the serious and persistent mental illness (SPMI) members under Orange County’s Health Care Agency Mental Health plan as an administrative service organization. Darren also launched the Community Health Partnership, an ambitious community-based care management program for co-morbid, high-utilizing commercial Anthem Blue Cross members across all 58 counties in California.

Darren worked extensively with Orange County Health Care Agency’s SPMI mental health system, both as service chief of a county-run clinic and as leader for several community-based, HCA-contracted organizations under Prop 63’s Mental Health Services Act. He began his career as an actuarial consultant.

Darren obtained a Master of Business Administration at the University of Southern California, a Master of Social Welfare at the University of California, Los Angeles, and a Bachelor of Science degree in management science at the University of California, San Diego. He is a California licensed clinical social worker also certified in rapid process improvement.

Darren and his wife enjoy coaching their two young children in sports, despite the fact that they only listen to the other coaches and already seem to know it all.