Oscar L. Amparan, FACHE
Executive Vice President, Southeast Zone Operations Leader
With more than 30 years of health care experience, Oscar joined Texas Health Resources in 1994 and has taken on increasing levels of responsibility throughout his tenure. Most recently, he has served as president of Texas Health Harris Methodist Hospital Fort Worth and executive vice president of Texas Health Resources. Before taking the post in Fort Worth, Oscar was president of Texas Health Arlington Memorial.
Before joining Texas Health, Oscar was regional vice president and chief operating officer for the intensive resource division of Quorum Health Resources in Tennessee. He founded Southwest Medical Development Corporation in El Paso in 1986.
Oscar has a master’s degree in Hospital and Health Care Administration at the University of Minnesota and completed his residency in hospital administration at the University of Texas M.D. Anderson Hospital. He is currently is a fellow in the American College of Healthcare Executives and serves on numerous community boards and committees.
Mark Lester, M.D., M.B.A., C.P.E., FACS
Executive Vice President, Southeast Zone Clinical Leader
Mark has been with Texas Health Resources since 2009, serving as vice president and chief quality officer at Texas Health Dallas. For the last year, he has also served as interim chief clinical and quality officer for the Texas Health system, working with leadership across the organization to advance clinical and quality initiatives.
Prior to joining Texas Health Resources, Mark served as chief medical officer for St. Mary's of Michigan Health and practiced as a neurosurgeon for many years, serving as chief of neurosurgery and vice chair of surgery at Pennsylvania’s Lehigh Valley Hospital and Health Network.
Mark holds a medical degree from the University of Pittsburgh School of Medicine and completed his residency at the University of Pittsburgh Medical Center and a fellowship at Queen Square in London. He earned an MBA from the Wharton School at the University of Pennsylvania and a Certified Physician Executive designation from the American College of Physician Executives.
Jeffrey L. Canose, M.D., M.H.A., FACHE
Executive Vice President, Southwest Zone Operations Leader
Jeff became president of Texas Health Plano in 2009 after three years serving as senior vice president and chief operating officer at Texas Health Plano and Texas Health Dallas.
Prior to joining Texas Health Resources, he served as vice president of clinical operations for CaroMont Health/Gaston Memorial Hospital in North Carolina. His professional experience also includes a decade of clinical practice and progressive executive leadership as a clinical department chair, academic program director of anesthesiology, and administrator of perioperative services at The Western Pennsylvania Hospital in Pittsburgh.
Jeff earned his medical degree from the Medical College of Pennsylvania and holds a master’s degree in Healthcare Administration from the University of North Carolina. He completed his internship at Connecticut’s St. Francis Hospital and Medical Center and his residency with the University of Connecticut Health Center. At the University Health Center of Pittsburgh, he completed both academic and research fellowships. He currently serves on the Texas Hospital Association’s board of trustees and is the chair-elect for the Plano Chamber of Commerce.
Harold Berenzweig, M.D.
Executive Vice President, Southwest Zone Clinical Leader
Harold became vice president of medical and information management at Texas Health Fort Worth in 2006 after serving as medical director of continuous quality improvement and vice president of medical specialties for the hospital from 1995 to 2000. He has also served as chief of internal medicine in the United States Air Force Regional Hospital at Carswell Air Force Base in Fort Worth and was in private practice in gastroenterology from 1978 to 2005.
After receiving his medical degree at New York University, Harold completed his residency at Beth Israel Hospital in Massachusetts and his fellowship in gastroenterology at Yale-New Haven Hospital in Connecticut, and was a postdoctoral associate in Medicine at Yale University and a clinical fellow in Medicine at Harvard College. Currently, he is a diplomate on both the American Board of Internal Medicine and the American Board of Internal Medicine-Gastroenterology.
Stephen C. Hanson, M.P.H., FACHE
Executive Vice President, North Zone Operations Leader
With more than 30 years of health care leadership experience, Steve joined Texas Health Resources as executive vice president of operations in 2005 and currently serves as senior executive vice president of system growth and integration.
Prior to joining Texas Health Resources, Steve served as president and CEO of Appalachian Regional Healthcare in Kentucky. During his tenure, ARH was ranked as the No. 1 health system in Kentucky and West Virginia. He also has held executive and senior leadership positions with Millard Fillmore Health System and Gates Circle Hospital in New York, and Iowa’s Finley Tri-States Health Group and Schoitz Health Resources.
Steve earned a master of public health degree in health administration from the University of Oklahoma and is a fellow in the American College of Healthcare Executives, chair-elect of the American Hospital Association Council on Healthcare Systems and chair of the Texas Association of Voluntary Hospitals.
Elizabeth "Liz" Ransom, M.D., FACS
Executive Vice President, North Zone Clinical Leader
Liz is currently the chief quality officer at Texas Health Harris Methodist Hospital Southwest Fort Worth. During her tenure in this role, Texas Health Southwest has received a quality care financial reward from the Healthcare Quality Incentive Demonstration and has been named a QUEST Top Performing Hospital. Prior to serving as chief quality officer, Liz worked with the Texas Health Research & Education Institute on the graduate medical education initiative for Texas Health Resources.
Liz earned her medical degree from Wayne State University in Michigan, and completed her residency in Otolaryngology-Head and Neck Surgery at the Henry Ford Health System. As a senior staff physician at Henry Ford, she served as residency program director, vice-chair and chair elect of the Henry Ford Medical Group. She was also the vice chair of the Michigan Chief Medical Officer Consortium.
Additional Leadership Positions
Senior Vice President, Care Continuum and Collaborations
While continuing to serve as president of Texas Health Partners, Krystal will also begin overseeing the management of relationships with a growing set of care continuum partners. Vital to Texas Health’s transformation of health care delivery, this new position will report to Barclay Berdan, senior executive vice president and chief operating officer.
Krystal became president of Texas Health Partners in 2007 after three years as the organization’s executive vice president and chief operations officer. During her tenure with Texas Health Partners, Krystal has overseen the development of newly-constructed joint ventures including Presbyterian Plano Center for Diagnostics and Surgery, Harris Methodist Southlake, Texas Health Presbyterian Hospital Rockwall, Texas Health Presbyterian Hospital Flower Mound and Central Business Office services, among others.
Krystal is a certified public accountant (CPA) in the state of Alabama and graduated magna cum laude from the University of Alabama. She currently serves on the board of Texas Physicians Hospital Advocacy Center and is a member of the Healthcare Financial Management Association.
Lillie Biggins, B.S.N., M.S.N.
President, Texas Health Harris Methodist Hospital Fort Worth
Lillie brought more than 20 years of health care industry experience to Texas Health Resources when she became the vice president of operations at Texas Health Fort Worth in 1997.
Prior to joining Texas Health Resources, Lillie held a variety of executive and clinical leadership positions at North Texas facilities including Columbia/HCA Plaza Medical Center, John Peter Smith Hospital and Parkland Memorial Hospital.
Lillie is a graduate of John Peter Smith School of Nursing, holds a bachelor’s degree in nursing from University of Texas at Arlington and a master’s degree from Texas Woman’s University in Denton. She is currently on the adjunct faculty at the University of Texas at Arlington and is a member of numerous professional organizations including the American College of Health Care Executives and the American Nurses Association. She also served as board chair for the American Cancer Society, Dallas-Fort Worth International Airport and Tarrant County Workforce Solutions. She was named distinguished nursing alumnus of the UTA College of Nursing.
Mike Evans, B.S.N., M.S.N.
President, Texas Health Presbyterian Hospital Plano
For the past three years, Mike has served as senior vice president and chief operating officer at Texas Health Plano. An Army veteran, Mike began his career at Texas Health Resources in 1982 at Texas Health Dallas.
During his tenure, Mike has served on a variety of key committees and councils including the Texas Health Resources Physicians Leadership Council, the Chief Nursing Officer’s Council and the President’s Leadership Council.
Mike earned his master’s degree in Nursing Administration from Texas Women’s University in Denton and is currently a member of the American College of Healthcare Executives, Texas Nurses Association and the American Nurses Association.