Dr. Han is a Professor with the Department of Emergency Medicine at Vanderbilt University Medical Center. He completed his emergency medicine residency at the University of Cincinnati and also served as chief resident. He completed a research fellowship and obtained a Master of Science in Clinical Epidemiology. In addition to his clinical responsibilities in the ED, Dr. Han has been very active in patient-oriented research. His research focus is on delirium and investigating how acute illness affects cognitive aging. He has developed validated several brief delirium assessments for the emergency department setting and examined how delirium in the ED affects long-term outcomes. Dr. Han has received funding from the Emergency Medicine Foundation and the National Institute of Health. He is currently the Co-Principal Investigator of a National Institute on Aging R01, which is a randomized trial evaluating a cognitive intervention in older hospitalized adults with delirium. He is also the Co-Principal Investigator of a Patient-Centered Outcomes Research Institute (PCORI) award. This award is a multi-center randomized trial comparing ketamine vs etomidate’s effect on mortality and post-traumatic stress disorder symptoms in ED and ICU patients who are emergently intubated. Within Vanderbilt University Medical Center, he serves as the Executive Member of the Critical Illness, Brain Dysfunction, and Survivorship (CIBS) Center and a faculty member of the Center for Emergency Research and Innovation (CERI). He is also part of the Geriatric Research, Education, and Clinical Care (GRECC) in the Tennessee Valley Health Care System.

Outside of work, he enjoys spending time with his wife and three kids, watching his kids play soccer and perform gymnastics, cooking, grilling on the Big Green Egg, and rooting for the NY Giants.