Executive Leadership Team at Group Health

Group Health's Executive Leadership Team provides senior leadership at Group Health. Their responsibilities include setting long-term strategy, monitoring performance and overseeing day-to-day functions.

Scott Armstrong

President and chief executive officer
Group Health Cooperative

Scott ArmstrongScott Armstrong is president and CEO of Group Health Cooperative, one of the nation's largest consumer-governed health care systems. He has been with Group Health since 1986 in positions ranging from assistant hospital administrator to chief operating officer. He became president and CEO in January 2005.

Armstrong has more than 35 years of experience in health care. He joined Group Health from Miami Valley Hospital in Dayton, Ohio, where he was the assistant vice president for hospital operations.

He received a bachelor's degree from Hamilton College in New York and a master's degree in business with a concentration in hospital administration from the University of Wisconsin–Madison.

Armstrong joined the board of directors of Puget Sound Energy (PSE) in 2015. PSE has provided energy to the Puget Sound area for more than 135 years.

Armstrong is also a board member of both the Alliance of Community Health Plans and America's Health Insurance Plans, and a fellow of the American College of Healthcare Executives. In addition, he is a member of the Washington Roundtable (WR), a board that works together to effect positive change on public policy issues that support the state's economic vitality and foster opportunity for all Washingtonians.

Diana Birkett Rakow

President, Group Health Foundation
Executive vice president, Marketing and Public Affairs, Group Health Cooperative

Diana Birkett RakowDiana Birkett Rakow is executive vice president of Marketing & Public Affairs for Group Health and president of the Group Health Foundation. As executive vice president, she is responsible for driving delivery of aligned and consistent messaging in Marketing & Public Affairs to promote the organization's services and products, enhance its brand and reputation in the communities it serves, and support its business goals and mission of improving health. As president of the Foundation, she oversees their work to support Group Health patient care and community health programs.

Prior to joining Group Health in 2006, Rakow served in Washington, D.C. as health policy advisor to the Democratic staff of the United States Senate Committee on Finance, which has jurisdiction over Medicare and Medicaid, and to Senator Max Baucus (D–Montana), the ranking member of the committee.

Rakow was a David Winston Health Policy Fellow in Washington, D.C., following graduate school at the University of Washington, where she received master's degrees in public health and public administration. In addition, she received a Bachelor of Arts in Chemistry from Harvard University. She currently serves as an affiliate associate professor at the University of Washington School of Public Health. She is also a member of the Washington State Health Innovation Leadership Network and sits on the board of directors for the Pacific Science Center, and Seattle Metropolitan Chamber of Commerce.

Linda Breard

Executive vice president and chief financial officer

Linda BreardLinda Breard, CPA, is executive vice president and chief financial officer (CFO) for Group Health Cooperative. She is responsible for all aspects of finance at the organization as well as administrative services, including facilities and materials management.

Breard has worked in the tech industry since 1998 serving as CFO, senior vice president, and vice president of finance for publicly traded companies, including Advanced Digital Information Corp (ADIC) and Quantum (QTM) with revenue up to $1.3 billion. In 2015, Breard became a member of the board of directors of Potlatch Corporation and serves on the audit committee.

At ADIC, she negotiated and transitioned five acquisitions, two divestitures, and outsourced the manufacturing and service business. She then facilitated Quantum's acquisition of ADIC in 2006 and completed two more acquisitions and integrations. Upon the acquisition of ADIC, she assumed the role of vice president of finance at Quantum. In 2009, she was promoted to senior vice president of finance, IT, and facilities, and then CFO. By 2012, Breard added human resources and corporate communications to her portfolio.

Breard has a bachelor's degree in business administration from the University of Washington.

David Grossman

Executive medical director
Population and Purchaser Strategy, Health Plan

David GrossmanDavid Grossman, MD, MPH, is executive medical director for Population and Purchaser Strategy at Group Health Cooperative. As a member of the executive and health plan leadership teams, he provides direction for evidence-based population health programs and leads a consultation program to help key purchasers better understand their population health needs. He also works closely with public policy leaders to interpret and implement public policy initiatives as they relate to delivery system and finance reform.

As a senior investigator at the Group Health Research Institute and professor of Health Services and adjunct professor of Pediatrics at the University of Washington, he is involved in prevention research, and also practices pediatrics part-time at Group Health Factoria Medical Center.

Dr. Grossman graduated from the University of California, Berkeley and earned his medical degree from the Geffen UCLA School of Medicine. He completed his residency in pediatrics at the University of North Carolina, Chapel Hill and his fellowship and MPH degree with the Robert Wood Johnson Clinical Scholars Program at University of Washington. He is board certified by the American Board of Pediatrics.

He is currently vice chair of the U.S. Preventive Services Task Force and the Committee on Performance Measurement of the National Committee on Quality Assurance.

Sue Kozik

Executive vice president and chief information officer

Sue KozikSue Kozik is executive vice president and chief information officer (CIO). She is responsible for Group Health's IT framework and guiding the IT strategy and technology investments for the organization. She leads the IT programs supporting Health Plan, Care Delivery, Population Health Management, Digital Strategy and Enterprise Analytics, and Clinical Informatics.

Kozik has more than 30 years of information technology experience across a diverse mix of service industries. Most recently, she was senior vice president and CIO at Independence Blue Cross in Philadelphia. She has also served in executive roles at TIAA-CREF, Lucent Technologies, and CIGNA. She has also been recognized by the IT industry with many prestigious awards, including a CIO 100 Award and an HP Innovation Award.

Kozik graduated from Bates College and has served on their Board of Trustees for 15 years. She is also a member of the board of directors of TaaSera and Tech Impact, and she serves on the CIO advisory boards of Neoris and IDG Ventures.

Tami Lamp

Executive vice president
Human Resources

Tami LampTami Lamp is executive vice president of Human Resources for Group Health Cooperative. She is responsible for developing key human resources initiatives that support the strategic plan and vision of the organization.

Prior to joining Group Health in 2015, Lamp was the chief people officer for Caradigm, a Bellevue-based global software company focused on population health. She has also held HR leadership positions at Microsoft, Starbucks, WRQ, and HomeGrocer.com.

A native Northwesterner, Lamp earned a master's degree in industrial and labor relations from Cornell University, a master's degree in aeronautical studies and business administration from Embry-Riddle Aeronautical University, and a bachelor's degree from the University of North Dakota.

Erin Leff

Executive vice president
Group Practice Division

Erin LeffErin Leff is executive vice president of the Group Practice Division at Group Health Cooperative. She is responsible for the strategic planning and operations of 25 medical centers, including 3 multispecialty campuses. In addition, she oversees one of the region's largest pharmacy systems, lab and radiology operations, occupational health programs, and behavioral health services.

Leff has 20 years of experience in diverse health care settings, including Planned Parenthood, a national network of nonprofit community clinics, and Tenet Healthcare, a publicly-traded hospital system. Prior to joining Group Health in 2003, she was the associate administrator at Tenet's Hahnemann University Hospital in Philadelphia, Pa.

Leff received a bachelor's degree from Colgate University in New York and a master's degree in business administration with a concentration in health sector management from Duke University's Fuqua School of Business. She has participated in numerous leadership development programs, including Tenet's Future CEO Development Program and Leadership Tomorrow Seattle. She currently serves on the board of the Washington State Hospital Association.

Dawn Loeliger, JD

Executive vice president
Strategic Planning & Deployment

Dawn LoeligerDawn Loeliger provides executive leadership for strategic planning, strategic business development, Lean consultancy, enterprise project management, and capital and facility planning.

Loeliger has nearly 30 years of leadership experience. Since joining Group Health in 2011, she has served as executive director, Marketing Operations and Innovation; and executive director, Business Management. One of her accomplishments in 2013 was to co-lead the Cost Repositioning Team, where she demonstrated her ability to oversee the implementation of challenging, controversial initiatives across the organization. She has also worked as a senior vice president at Hitachi Consulting, overseeing the global Microsoft account; and held leadership positions with Microsoft, MyPoints.com, and M/A/R/C Inc.

Loeliger has a juris doctorate with honors from Southern Methodist University. She earned a masters in marketing research and a bachelor's in English — graduating magna cum laude — from the Universty of Georgia.

Robert O'Brien

Executive vice president
Health Plan Division

Robert O'Brien

Robert O'Brien is responsible for Group Health's health plan operations, including line of business management, product management, network services and care management, sales and account management and administration. O'Brien was previously with Mercer, where he led the health and benefits consulting business in the Americas, and chaired the global practice.

O'Brien holds an AB degree, magna cum laude, from Harvard University and a JD degree from the University of Maine School of Law. He is an active member of the Oregon State Bar, the American Bar Association, the American Health Lawyers Association, and the National Business Group on Health. Bob also serves on the board of trustees and executive committee of the Seattle Metropolitan Chamber of Commerce and is a director emeritus of the Washington Health Alliance, the Benaroya Research Institute, and the Seattle Symphony.

Paul Sherman, MD, MHA, FAAP

Executive medical director
Health Plan Division

Executive medical director
Group Practice Division

Paul Sherman, MDPaul Sherman, MD, MHA, FAAP, is executive medical director, Group Practice Division, at Group Health Cooperative. He began clinical practice at Group Health in 1992 and his roles since then have included executive medical director, Health Plan Division; medical director, Care Systems Development; associate medical director, Strategy Deployment; medical director, Consultative Specialty Services; Seattle district medical director; Monroe clinic chief and chief of Pediatrics.  

Dr. Sherman is a board-certified pediatrician with a Bachelor of Science from the University of Notre Dame and a Doctorate of Medicine from Johns Hopkins University School of Medicine. He completed his internship and residency at Seattle Children’s, and obtained his Master of Health Administration at the University of Washington. He currently serves on the board of directors for Seattle Counseling Service, the Washington Health Alliance, and CareUnity.

Stephen Tarnoff, MD

Chief medical executive and president
Group Health Physicians

Stephen Tarnoff, MDStephen Tarnoff, MD, is the physician leader accountable for the care quality and outcomes of 350,000 patients who receive care at Group Health's 25 medical centers. He concurrently serves as president of Group Health Physicians, leading the nationally recognized 1,000-member multispecialty group and serving on its Board of Directors.

His other leadership positions have included executive medical director of the Group Practice; medical director for Medicare and Medicaid, and Group Health's contracted network in Western Washington; chief of Central Region Primary Care; and chief of Consultative Specialty Care Services. He practiced family medicine at Group Health for more than 25 years, and has been recognized with a Lifetime Achievement Award by Group Health Physicians.

Dr. Tarnoff graduated from the University of California, Berkeley, and the University of Southern California School of Medicine. He completed his family medicine residency at the University of Washington and a fellowship in medical education and health policy at the Association of American Medical Colleges. He is a member of the Washington Academy of Family Physicians and the Washington State Medical Association.

Sally Yates

Executive vice president and general counsel

Sally YatesSally Yates is executive vice president and general counsel for Group Health Cooperative. She directs Enterprise Risk and Governance, responsible for legal, privacy, compliance, audit, risk management, information security, and governance services.

Yates has been with Group Health since 1991, first helping to build Group Health's in-house litigation practice and later branching into other areas of legal practice and assuming oversight of all risk and governance functions.

Before joining Group Health, Yates was a litigator and employment law attorney at Davis Wright Tremaine. She received her law degree from the University of Virginia School of Law and a bachelor's in history, graduating magna cum laude, Phi Beta Kappa, from Carleton College. She is a member of the Washington State Bar Association, The American Health Lawyers Association, and the Washington State Society for Healthcare Attorneys. She is also a member of the board of directors of the Alliance for Education, and serves as a mentor to graduate students in the University of Washington Master of Health Administration program.

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