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Group Health Physicians Leadership

President and Chief Medical Executive

Dr. Steve Tarnoff

Stephen Tarnoff, MD, is President/Chief Medical Executive of Group Health Physicians, a professional corporation of nearly 1400 physicians and clinicians. GHP provides and manages medical services for Group Health Cooperative. Dr. Tarnoff also continues to serve as the executive medical director of the Group Practice Division, overseeing the care of over 425,000 patients in Group Health-operated medical facilities.

Dr. Tarnoff has practiced as family physician at Group Health for more than 25 years, and has gone on to hold numerous leadership positions within the organization including Chief of Central Region Primary Care, Chief of Consultative Specialty Care Services, Medical Director for the Group Practice Division, Medical Director for Medicare and Medicaid, and Medical Director for Group Health’s contracted network in Western Washington.

Over his career, his responsibilities have included strategy and business development, Medicare plan quality, revenue cycle management, documentation and coding, health plan product development, community relations and health public policy issues.

Dr. Tarnoff’s professional life has been devoted to improving the clinical and service performance and operational efficiencies of our integrated care delivery system. His leadership roles have emphasized creating a culture that focuses on continuous quality improvement, a better care experience, and the efficient and appropriate use of medical resources in order to maximize the value to patients and payers. He has twice been elected to the GHP Board of Directors and his contributions toward improving patient care have been recognized with a “Lifetime Achievement Award” by Group Health Physicians.

He graduated from the University of California, Berkeley and the University of Southern California, School of Medicine, and completed his residency in Family Medicine at the University of Washington. He completed a Fellowship in Medical Education and Health Policy at the Association of American Medical Colleges (AAMC). He is Board Certified in Family Medicine and a member of the Washington Academy of Family Physicians and the Washington State Medical Association.

Medical Group Leaders

Marc West
Executive Vice President
Group Health Physicians
Marc West

Dr. Paul Sherman
Executive Medical Director
Health Plan Division
Paul Sherman, MD
Dr. Paul Fletcher
Medical Director
Clinical Operations &
Market Integration, North
Paul Fletcher, MD
Dr. Judith Nielsen
Medical Director
Clinical Operations &
Market Integration, South
Judith Nielsen, MD
Dr. Matt Handley
Medical Director
Enterprise & Network Quality
Matt Handley, MD
Dr. Chris Cable
Medical Director
Clinical Excellence & Integration
Chris Cable, MD
Dr. Dave McCulloch
Medical Director
Clinical Improvement & Prevention
Dave McCulloch, MD
Dr. Marc Mora
Chief Medical Officer
Health Plan Division
Marc Mora, MD
Dr. Amy Wilkerson
Medical Director
Continuing Care
Amy Wilkerson, MD
Dr. David Grossman
Medical Director
Population & Purchaser Strategy
David Grossman, MD
Dr. Michael Toubbeh
Medical Director
Procedural & Surgical Specialties
Michael Toubbeh, MD
Dr. Larry Marx
Medical Director
Behaviorial Health Services
Larry Marx, MD
Dr. Wellesley Chapman
Medical Director
Delivery System Innovation , Development, and Business Services
Wellesley Chapman, MD
Dr. Sarah Levy
Medical Director
Continuum of Care
Sarah Levy, MD
Dr. RL Thompson
Medical Director
Infection Control & Employee Health
RL Thompson, MD
Dr. Steve Lavine
Physician in Chief
Steve Lavine, MD
Dr. Adam Jonas
Physician in Chief
East King
Adam Jonas, MD
Dr. Jon Lowe
Physician in Chief
Jon Lowe, PA-C
Dr. Philip Paros
Physician in Chief
Eye Care
Philip Paros, MD
Dr. Monica Opitz
Sr. Vice President
Strategy & Business Development
Monica Opitz
Laurie Kutschia
Sr. Vice President
GHP Operations
Laurie Kutschia