Nathaniel Hupert, MD, MPH, is practicing clinician and public health researcher focusing on healthcare processes and emergency response logistics. Using a variety of methods including Process Mining and Discrete Event Simulation, his research seeks to improve the effectiveness of care delivery in both conventional and crisis settings. Since September 2000, he has collaborated with local, State, Federal, and international public health officials in advancing clinical and health system preparedness for bioterrorism and other public health emergencies. Several of Dr. Hupert's computer models of mass antibiotic dispensing and hospital surge capacity have been widely downloaded and used by public health professionals worldwide, notably the BERM Point-of-Dispensing staffing model and the AHRQ Surge Model. He led the development of two U.S. healthcare planning documents, the "Community Guide for Public Health Preparedness" (2004) and the "Guidebook for Hospital Preparedness Exercises" (2010). Dr. Hupert has served on the Anthrax Modeling Working Group of the U.S. Department of Health and Human Services (DHHS) (2003-9); was a member of the 2007 RAND Expert Panel on Defining Public Health Preparedness; was the founding Director of the Preparedness Modeling Unit at the U.S. Centers for Disease Control and Prevention (CDC) (2008-10); served on the Scientific Advisory Board of the NIGMS Modeling of Infectious Disease Agent Study (MIDAS) (2012-14); and was a Senior Medical Advisor for the Biomedical Advanced Research and Development Authority (BARDA) in the office of the DHHS Assistant Secretary for Preparedness and Response (ASPR) (2014-15). Formerly Senior Advisor for both the CDC's Division of Preparedness and Emerging Infections and the DHHS National Healthcare Preparedness Program, Dr. Hupert is now the Policy Lead for the Oxford-based COVID-19 International Modeling Consortium (https://comomodel.net ). Dr. Hupert received his training at Harvard Medical School, the University of Pittsburgh Medical Center, and the Harvard School of Public Health.