Dr. Thomas W. Diller

Associate Professor, Department of Health Behavior and Health Systems


Dr. Thomas W. Diller

Education & Experience:
Dr. Diller holds a Masters of Medical Management degree, is a Certified Physician Executive, is certified in Medical Quality and is black belt trained in lean six sigma and change management.  Additionally, he is a Board-Certified Internist with over 20 years of clinical practice experience in internal, occupational and preventive, and emergency medicine.  He has served on numerous medical staff committees, held elective office with county medical societies and served on national, state and community health policy committees and boards.  He has published several research papers on quality and patient safety topics and serves on the Editorial Board for The American Journal of Medical Quality.

Teaching & Public Health Interests:
Dr. Diller has extensive accomplishments and expertise in (1) improving healthcare quality and outcomes through high reliability, cultural transformation, lean six sigma and change management methods; (2) improving population health through clinical integration, care management and risk contract management; (3) leading information systems implementation and data analysis; (4) improving physician relations and the management of medical staff affairs; (5) managing operations for hospitals, medical groups and managed care; and (6) managing clinical research and academics. Dr. Diller teaches courses in Health Services Management and Human Resource Management.

Professional Activities & Awards:
Most recently, Dr. Diller served as VP and System Chief Medical Officer for CHRISTUS Health, a Catholic healthcare system with ~30 hospitals in the United States, 13 hospitals in Latin America and over $5B in net revenue.  His responsibilities included leading clinical standardization; patient safety, clinical risk management and quality initiatives; optimizing medical staff performance; serving as the President for a clinical integration network; and managing the system’s research and academic efforts.  Previously, he served Greenville Health System, a 6-hospital academic, integrated delivery system as corporate VP of Quality and Patient Safety, where he led quality and patient safety, led the development of the system’s research infrastructure, served as the principle investigator for quality and safety research; and served as the liaison for national and state academic, accreditation and quality organizations. Additional prior experience includes serving as a Chief Medical Officer for a community hospital, a large medical group practice and a provider owned managed care company.

Scholarly Interests:
In his role as Executive Director of the University of North Texas Health Science Center Institute for Patient Safety, he collaborates with University faculty, health care providers, and other academic institutions and patients in Texas to improve patient safety through education and research. The IPS sponsors and conducts patient safety research to accelerate the translation of discoveries, and apply existing knowledge and technologies for the mission of patient safety.

Link to Dr. Dillers’ Curriculum Vitae:

Link to Dr. Dillers’ University Profile:

This page was last modified on November 7, 2017