Jessica O'Neal, MHA

Chief Executive Officer, Medical City Children's Hospital

Jessica O’Neal

O'Neal was named chief executive officer of Medical City Children’s Hospital and Medical City Women’s Hospital Dallas, in December 2018.

From 2016 to 2018, O’Neal served as chief operating officer of the 515-bed West Florida Hospital in Pensacola, Fla. Under O’Neal’s leadership, pediatric specialty care network services and providers were integrated into West Florida Hospital’s delivery system and she launched a wide spectrum of pediatric services including orthopedics, cardiology, pulmonology, ENT, GI, urology and imaging services.

O’Neal previously served as VP of operations and chief operating officer of Methodist Dallas Medical Center, where she oversaw surgical services, oncology, neurosurgery, cardiology, radiology, weight management, respiratory therapy, food services, environmental services, physical plant, the GI lab, communications, police and volunteer services.

O’Neal holds a Master of Science in Health Care Administration from Trinity University and a Bachelor of Science in Nutrition/Dietetics from Texas Christian University.

Jim Allard, DNP, RN, NEA-BC

Chief Nursing Officer, Medical City Children’s Hospital

Jim Allard

Jim Allard, DNP, RN, NEA-BC, joined Medical City Children’s Hospital and Medical City Women’s Hospital Dallas as Chief Nursing Officer in March 2020.

Allard, who has been with HCA Healthcare since 2013, previously served as Assistant Chief Nursing Officer at Clear Lake Regional Medical Center, part of the HCA Gulf Coast Division. His appointment was a return to Medical City Children’s Hospital, where he previously served as director of pediatric services.

Allard also worked in several leadership roles at The Women’s Hospital of Texas. He earned his Doctor of Nursing Practice degree from Texas Christian University and a master’s degree in nursing administration from the University of Texas at Arlington.

John Lazenby, MD

Chief Medical Officer, Medical City Children's Hospital

John Lazenby

John Lazenby, MD, was named Chief Medical Officer of Medical City Dallas, Medical City Children’s Hospital, Medical City Women’s Hospital, Medical City Heart Hospital and Medical City Spine Hospital in June 2020.

He previously served as CMO of Memorial Hospital in Jacksonville, Florida. During his tenure, he provided leadership to the medical staff and oversaw several quality, clinical performance and service initiatives throughout the hospital.

Prior to joining HCA Healthcare, John spent five years at University of Alabama Birmingham Hospital where he served as Assistant Chief Medical Officer and Associate Professor of Medicine. Prior to joining the team at UAB, he spent 12 years in private practice in both Arkansas and Georgia.

Lazenby is board Certified in Pulmonary Disease and Critical Care Medicine. He earned his medical degree from the University of Arkansas and a master's degree in business administration from Auburn University. He has served as the Chief Executive Officer of his medical practice as well as the Chief Medical Information Officer of an acute care medical and surgical hospital. He is also a Fellow of the American College of Chest Physicians as well as a member of the American Association for Physician Leadership.