Leadership Team

Scott Reiner

Scott Reiner is the chief executive officer of Adventist Health. Scott has been in his current role since 2014. A registered nurse with nearly 30 years of healthcare leadership, Scott has a passion for mission, especially serving the underserved. He is committed to quality, experience, consumer value and expanding mission into the community. As CEO, he is responsible for setting the vision and direction of Adventist Health and positioning the organization for growth.

Previously, Scott served as executive vice president/chief operations officer and was responsible for the day-to-day operations of the $4 billion health system. Prior to that, he was president and CEO of Adventist Health Glendale, a 515-bed facility in Southern California. Scott has a bachelor’s degree in nursing from Pacific Union College in Angwin, California, and a master’s degree in health administration from California State University, Northridge.

Bill Wing

Bill Wing, president of Adventist Health, assumed his current position in November 2016 after serving as executive vice president/chief operations officer since March 2014. In this role, Bill's primary focus is ensuring Adventist Health is structured to achieve the system’s strategic vision.

In June 2011, Bill joined Adventist Health as the senior vice president for system performance and strategy. In that role, he drove the strategic plan and value-based performance targets for Adventist Health’s markets in four states. He was also responsible for the day-to-day operations across the care continuum including ambulatory, acute, post-acute and clinical services. After graduating from Southern Adventist University with a bachelor’s degree in business administration, Wing completed an MBA in finance from the Owen Graduate School of Management at Vanderbilt University.

Mark Ashlock

Mark Ashlock, physician services president, joined Adventist Health in August 2009. He provides leadership to the operations team that oversees the 280 ambulatory clinics and approximately 1,300 clinic providers. Additionally, he is responsible for the Independent Practice Association, the Clinically Integrated Network and Adventist Health Accountable Care, LLC (an accountable care organization, ACO).

Ashlock has more than 30 years of experience providing services to physicians, medical groups, hospitals, payers and other related healthcare providers. In addition, he has directed the formation of multi-specialty and single-specialty medical groups. Ashlock received a bachelor’s degree in accounting from Loma Linda University, Riverside, California, and is a certified public accountant in the state of California.

John Beaman

John Beaman assumed the role of chief business officer for Adventist Health in March of 2018. In this role, John directs executive leadership and operational management of information technology, accounts payable, payroll, supply chain, construction management, facilities and the analytics and project management office. Prior to this role, John served as the senior finance officer for shared services, chief financial officer of Adventist Health Simi Valley and chief financial officer of Adventist Health Bakersfield.

John holds a bachelor’s degree in business administration from Southwestern Adventist University and an MBA with emphasis in Finance from Marylhurst University.

Hoda Asmar

Hoda Asmar, M.D., MBA, FACP, FAAPL, FACHE, EVP, chief clinical officer, joined Adventist Health in June 2017, as the organization’s senior physician leader. Dr. Asmar is responsible for advancing Adventist Health clinical strategy by spearheading initiatives aimed at leading population health strategies, maximizing the efficiency of clinical operations, continuously improving patient engagement and quality and safety outcomes. Her role spans the continuum of care, medical and clinical operations, strategy, and finance.

Before coming to Adventist Health, Dr. Asmar held numerous healthcare system physician leadership roles in standalone hospitals, integrated hospital systems and a pharmacy management private-equity held firm, with a demonstrable track record for achieving accelerated and sustainable results. Dr. Asmar earned her medical degree at St. Joseph University Medical School in Beirut, Lebanon, and holds an MBA in integrative management from Michigan State University. Her clinical background is in internal medicine and infectious diseases.

Jeff Eller

Jeff Eller assumed the role of president of Adventist Health’s Northern California Region in February of 2014. The Northern California Region includes Adventist Health Feather River, Adventist Health Howard Memorial, Adventist Health Clear Lake, Adventist Health and Rideout, Adventist Health St. Helena, Adventist Health Ukiah Valley and Adventist Health Vallejo. The region also has more than 75 clinics and one joint-venture retirement center.

Jeff has 30 years of service with Adventist Health, including the role of vice president at Adventist Health Glendale and CEO of Adventist Health Sonora. He is board-certified in healthcare management as a fellow of the American College of Healthcare Executives. Jeff received his MBA from California State University, San Bernardino with an emphasis in human resources and holds a bachelor’s degree from Loma Linda University.

Wayne Ferch

Wayne Ferch has served as president of Adventist Health’s Central California Region since February 2014. The region includes hospitals in Bakersfield, Delano, Hanford, Lodi, Reedley, Selma, Sonora, Stockton, Tehachapi and Tulare as well as more than 130 medical clinics and three home care agencies.

Before his regional role, Wayne served as president of a network of Adventist Health hospitals and services in Hanford, Reedley, Selma and other Central Valley communities from 2011 to 2014. He also served for more than 10 years as president and CEO of Adventist Health Feather River, a 101-bed hospital in Paradise, California, in Northern California. He holds an MBA from Andrews University in Berrien Springs, Michigan, and a bachelor’s degree from Pacific Union College in Angwin, California. He is also a fellow of the American College of Healthcare Executives.

Andrew Jahn

Andrew Jahn assumed the role of president of Adventist Health’s Southern California region in February 2018. As president of the Southern California Region, Andrew coordinates the business activities of Adventist Health Glendale, Adventist Health White Memorial, Adventist Health Simi Valley and the Adventist Health Physicians Network. He also chairs the board of directors for each of the three hospitals. Andrew’s previous roles included director of finance, president and CEO of Adventist Health Sonora.

Andrew received his MBA from the University of Central Florida and holds a bachelor's degree in business management from Union College.