John N. Mafi, MD, MPH is an Associate Professor of Medicine at the David Geffen School of Medicine at UCLA and Adjunct Physician Policy Researcher at the RAND Corporation. His research focuses on evaluating healthcare innovations and technologies to improve care value for older adults, with particular expertise in aging and dementia. He co-led one of the first randomized trials of AI medical scribe technology, published in NEJM AI, evaluating what has become the fastest growing application of generative AI in healthcare. Dr. Mafi has received multiple awards from the National Institute on Aging, including a Beeson Emerging Leaders in Aging Career Development Award, and has published over 50 original research articles in leading journals including JAMA, Annals of Internal Medicine, and Health Affairs, with several studies informing health policy in the United States, Canada, Japan, and the European Union. In addition to his research, Dr. Mafi serves as a teaching attending on the UCLA Health geriatrics unit. He completed his internal medicine residency, chief residency, and fellowship at Harvard Medical School and Beth Israel Deaconess Medical Center and earned his MPH from the Harvard T.H. Chan School of Public Health.