David L. Callender, MD
President & CEO
Memorial Hermann Health System
David L. Callender, MD, joined Memorial Hermann Health System in 2019 as President and CEO.
In his role, Dr. Callender is responsible for leading and overseeing the System’s network of more than 300 hospitals, diagnostic and specialty centers, with more than 27,000 employees and 6,700 affiliated physicians.
An ENT surgeon with expertise in head and neck cancers, Dr. Callender has proven to be a successful healthcare leader over the course of his career, achieving successes in forward-thinking strategic planning, improvements in delivering high-quality and high-value health care, fostering strong leadership development, engaging employees and enabling physician collaboration.
Prior to joining Memorial Hermann, Dr. Callender served as President of the University of Texas Medical Branch (UTMB Health) for 12 years. Other previous roles include Associate Vice Chancellor and Chief Executive Officer for the UCLA Hospital System and Executive Vice President and Chief Operating Officer for MD Anderson.
A native of Wichita Falls, Texas, Dr. Callender received his medical degree from and completed his residency at Baylor College of Medicine. He also completed an oncology fellowship with MD Anderson and earned an MBA from the University of Houston.
Dr. Callender is married to his wife, Tonya. They have three children.