Vaccinations Webinar

Benjamin H. Park, M.D.

CEO of American Health Network and VP of Optum

Dr. Ben Park is the chief executive officer of American Health Network, part of Optum (AHN) and vice president of Optum.

Dr. Park joined together with a group of physicians in 1994 to create AHN. Dr. Park’s expertise is his ability to utilize information systems technology to better meet the needs of the customers of health care delivery and manage the costs. He is well known nationally for his accomplishments in defining a model that allows physicians to manage the entire continuum of health care delivery and the associated costs.

Under his leadership, AHN has expanded to more than 200 primary care doctors and specialists in more than 70 medical offices in Indiana and Ohio. In late 2019, AHN was acquired by Optum, adding AHN to a network of numerous care delivery organizations providing individualized quality, affordable care and superior experiences to millions of patients nationwide.

In addition to leading AHN, Dr. Park continues to practice family medicine – caring for people of all ages, at all stages of life – in his Lebanon, IN, office where he has treated patients for more than 41 years.

In 1984, Dr. Park founded Advanced Medical Management Systems, a computerized system for physicians’ offices that included medical records, billing and appointment scheduling. Dr. Park’s experiences include serving as chief of the medical staff at Witham Hospital, Lebanon, IN, developing computerized systems to manage hospital-based HMOs and health plans, authoring a number of articles on automated medical practice systems, serving on the ASTM committee for medical information interchange and speaking at national forums on the use of information systems technology in medicine.

Dr. Park holds a medical degree from Indiana University School of Medicine, after which he completed his residency at IU Health Methodist Hospital in Indianapolis, IN.

Terry Layman, M.D.

Senior Vice President, Corporate Medical Director, Marathon Health

Terry Layman, MD joined Marathon Health in 2012 and today serves as Senior Vice President, Corporate Medical Director. Prior to joining Marathon Health, he worked in hospital systems and led private practices in Marion and Fishers, Indiana. Dr. Layman graduated from Indiana University School of Medicine and completed his family medicine residency at St. Vincent Hospital in Indianapolis. He is a board-certified family physician with more than 20 years of experience as a primary care provider. He is also member of the American Medical Association, the Indiana State Medical Association and the American Academy of Family Physicians.

As SVP, Corporate Medical Director, Dr. Layman serves on the senior leadership team and provides clinical leadership for our 200+ health centers. Dr. Layman is passionate about delivering patient-centered primary care and continues to dedicate a portion of his time as a provider in one of our health centers. He enjoys taking a holistic perspective, spending the necessary time to fully understand an issue, while working to clarify options and recommendations with his patients.