Executive Team

Executive Team

David Klein, CEODavid Klein, MD, MBA
Chief Executive Officer

David G. Klein, MD, MBA, is the Chief Executive Officer of MarinHealth, an award-winning, full-service independent nonprofit health system in the San Francisco Bay Area. With over 30 years of dedicated experience, first, as a general surgeon for 14 years, Dr. Klein brings an impressive track record marked by a strong vision and demonstrated financial performance that has transformed underperforming hospitals into financially sound, thriving organizations.

Under his vision and leadership, Dr. Klein’s strategic initiatives have fueled MarinHealth’s revitalization and sustained growth. With an emphasis on leveraging strategic partnerships that deliver high quality and an improved overall health experience, Dr. Klein has driven growth through expanded access to patient care, bolstering MarinHealth’s status as the county’s preeminent healthcare system, extending its reach into communities throughout the entire North Bay.

Since joining MarinHealth, the organization has begun to realize the benefits of implementing these strategies. In addition to impressive growth, MarinHealth has garnered a remarkable number of industry awards and accolades, including “Best of the Best” Gold recognition for “Best Hospital” and “Best Birth Center” from Bay Area Parent Magazine; multiple 5-star Healthgrades performance ratings; and a Healthgrades ranking that positions MarinHealth within the nation’s top 10th percentile for cardiology services for a second consecutive year.

Before joining MarinHealth, Dr. Klein fostered innovation and growth, resulting in a financial turnaround to profitability, as President and Chief Executive Officer of Dignity Health’s two San Francisco-based hospitals: Saint Francis Memorial Hospital and St. Mary’s Medical Center. Prior to Dignity Health, Dr. Klein served as President of the Baylor Scott & White Health All Saints Medical Center in Fort Worth, Texas. Under his leadership, the hospital received numerous accolades for service line excellence and overall quality, including top hospital rankings from US News and World Report.

Dr. Klein is the Chief Executive Officer of the Marin Healthcare District Board. He also serves on several boards, including the California Hospital Association, the North Bay Leadership Council, and as chair-elect of the Hospital Council of Northern and Central California, where he previously served as chair of the San Francisco Marin section of the Hospital Council. He is an active member of the San Francisco Marin Medical Society and board member of the San Rafael Chamber of Commerce and District Hospital Leadership Forum. Dr. Klein has also held numerous community board positions with prominent organizations, including the American Heart Association, March of Dimes, American Cancer Society, and the Fort Worth Chamber of Commerce.

Dr. Klein graduated from the University of Southern California and earned his medical degree from the University of New Mexico. He also holds a master’s degree in Business Administration from the University of California, Irvine.

Andrew Apolinarski, MSN, RN, CNLAndrew Apolinarski, MSN, RN, CNL
Chief Nursing Officer
MarinHealth Medical Center

Andrew Apolinarski, MSN, RN, CNL, has more than twenty-five years of clinical, teaching and nursing leadership experience in acute care facilities in California, primarily in critical care.

He has served at MarinHealth Medical Center for almost ten years, most recently as Executive Director of Nursing Services and prior to that as Director of Critical Care Services. Before coming to MarinHealth, Andrew held nursing leadership and clinical positions in several San Diego area hospitals, including Scripps Memorial Hospital, Palomar Health and Tri-City Medical Center.

Andrew received his BSN and MSN from California State University in Southern California.

Eric Brettner Eric Brettner
Chief Financial Officer
MarinHealth Medical Center

Eric Brettner has more than twenty years of experience in healthcare finance, operations, process improvement and change management. Prior to joining MarinHealth, Eric was a regional CFO for a region for PeaceHealth in Bellingham, WA. Prior to that, he served in a number of positions with Dignity Health, including Senior Director of Finance and Chief Financial Officer for the Bay Area Service Area. He has also worked with HCA, Good Samaritan Health Systems and Alta Bates. Eric started his finance career with Arthur Andersen & Co, an international public accounting firm.

Eric holds a BS in Business Administration, Accounting & Finance from the University of California, Haas School of Business and an MBA from Saint Mary’s College of California.

Anita Chandrasena, MD Anita Chandrasena, MD
Chief Medical Officer
MarinHealth Medical Center

Anita Chandrasena, MD, is the Chief Medical Officer at MarinHealth, a full-service independent nonprofit health system in Marin County, California. With a vast clinical background as a practicing Pulmonary/Critical Care physician, Dr. Chandrasena brings a breadth and depth of experience in healthcare and leadership that spans nearly fourteen years, including eight years in progressive leadership roles while at Dignity Health. Most recently, she served as Chief Physician Executive for the Northern California Division. Prior to this, she served as Physician Executive for the Bay Area and Chief Medical Officer at Sequoia Hospital.

Dr. Chandrasena is a visionary leader with a passion for excellence and innovation. She has a proven track record in developing strategies focused on engaging clinicians and leading teams toward excellence in patient safety, quality, and patient experience. She will bring us the insight and strength we need to continue to elevate our standards of care, foster great physician relations, and inspire our medical staff to bring innovative treatment options and exceptional outcomes to the patients we serve.

Dr. Chandrasena graduated from medical school at Yale University School of Medicine, completed a residency in Internal Medicine at Yale-New Haven Hospital, and completed a Pulmonary and Critical Care Fellowship at the University of California San Francisco.

In her role as Chief Medical Officer, Dr. Chandrasena oversees key departments including Quality and Safety, Pharmacy, Laboratory Services, the Medical Staff Office, Medical Directors, and the clinical aspects of the UCSF partnership.

Mary Friedman Mary Friedman
Chief Strategy Officer

As the Chief Strategy Officer at MarinHealth, Mary leads transformational growth strategies, develops and structures partnerships, and spearheads new service development and physician recruitment for the enterprise.

Prior to joining MarinHealth in 2010, Mary worked in pricing strategy for UC San Diego Health System and in management consulting at Accenture in the Health and Life Sciences Consulting Practice where she collaborated with payers and providers across the county.

Mary holds a bachelor’s degree from UC Berkeley in Economics and Political Science and a master’s degree from the Harvard T.H. Chan School of Public Health in Healthcare Policy and Management.

Liz Kolcun Liz Kolcun
Chief Development Officer
MarinHealth Foundation

Liz Kolcun, an accomplished healthcare philanthropy professional, joined the MarinHealth Medical Center team in May 2016. Previously, Kolcun served as Chief Development Officer for the Palo Alto Medical Foundation (PAMF) where she led the philanthropy and annual fundraising programs. Earlier in her career, Kolcun managed all aspects of major gifts fund development at California Pacific Medical Center Foundation. Over her fifteen-year career in healthcare philanthropy, she has held responsibility for capital campaigns, individual major and principal gifts, planned gifts, grant writing, direct mail, event planning and philanthropy communications.

Kolcun is a graduate of University of Florida, in Gainesville, Florida.

Colin Leary Colin Leary
General Counsel

Colin Leary serves as General Counsel and oversees all legal affairs for MarinHealth Medical Center and MarinHealth Medical Network. Colin is a healthcare business attorney with extensive experience advising hospitals, health systems, physicians, management companies, and health care technology companies on a broad range of legal issues. He is a specialist in the structuring of mergers, acquisitions, joint ventures, and other affiliations, as well as the design of physician alignment strategies and compliance with privacy, fraud and abuse, and other industry regulations.

Prior to joining MarinHealth in 2021, Colin served as Chief Legal Officer of Altais, a healthcare management services and technology company, and as hospital counsel to the University of California, San Francisco. He came to UCSF from private practice as a healthcare transactional attorney at Jones Day, an international law firm.

Colin is a graduate of the University of Michigan Law School and DePauw University, and he is a member of the State Bar of California.

Eugene Lewis Eugene Lewis, EMBA, SPHR
Chief Human Resources Officer
MarinHealth Medical Center

Eugene joined our organization in 2014 as the lead for our Benefits team. He was promoted to Human Resources Director in June 2017. He has since served as a subject matter expert for HR policies and procedures and has led a number of initiatives in the area of benefits and leave of absence management, Employee & Labor Relations group negotiation, and was instrumental in developing HR responses to emergencies that affected our staff, including PSPS power shut offs, regional fire emergencies and of course, COVID related issues.

Eugene comes to this new role with fifteen years of human resources experience and holds dual Bachelor of Arts degrees in Sociology and African American Studies from the University of California, Davis and an Executive Master’s degree in Business Administration from California State University, Sacramento. He is certified as a Senior Professional of Human Resources [SPHR].

Jennifer Schaab Jennifer Schaab, MBA, MPH
MarinHealth Medical Network

Jennifer Schaab is an innovative health care leader passionate about advancing patient-centric care. With more than 20 years of progressive leadership experience, she brings proven performance in network development and growth, mergers and acquisitions, integration, strategic planning, operations, financial performance improvement, and developing high-caliber physician networks. In her role as President, Jennifer is accountable for a wide range of initiatives, including strategic growth, operations, financial performance, quality, and technology implementation.

Her experience prepares her well for this role. She served as GVP, Enterprise Strategy, at SCA/Optum Health. Prior to her work with Optum, Jennifer served as Chief Operations Officer for the Physician Enterprise at Providence Health and Dignity Health, with responsibility for their medical networks, IPAs, and all Ambulatory services. She also has experience with large university settings and private technology firms. She has successfully led clinic growth strategies, improved physician and patient engagement, launched clinical improvement programs, developed employee retention and physician burnout initiatives, and launched new technology initiatives that drove new growth, improved patient satisfaction, and improved quality of care.

Jennifer holds a Master’s degree in Public Health from the University of Southern California, a Master’s degree in Business Administration from Pepperdine University, and a Bachelor of Science in Biology from the University of California, Los Angeles.