Dr. Harold Lehmann is a professor of health sciences informatics and of pediatrics at the Johns Hopkins University School of Medicine. He holds joint appointments in health policy and management and in international health at the Johns Hopkins Bloomberg School of Public Health. His areas of clinical expertise include adolescent medicine and general pediatrics. Dr. Lehmann serves as the director of research and training for the Division of Health Sciences Informatics.

He received his B.A. from Columbia College. He earned his M.D. from the Columbia University College of Physicians and Surgeons and his Ph.D. from Stanford University.

Dr. Lehmann's research interests include medical informatics, evidence-based medicine and decision making, biostatics, decision analysis and Bayesian communications.

Dr. Lehmann is a fellow of the American College of Medical Informatics and the American Academy of Pediatrics. He is a member of the Society for Medical Decision Making and the American Medical Informatics Association.