Dr. Erickson earned his M.D. from The University of Health Sciences / Chicago Medical School. He completed an emergency medicine residency training at the University of Illinois and his medical toxicology fellowship at Cook County Hospital in Chicago, IL. Dr. Erickson is a Fellow of the American College of Emergency Physicians, American College of Medical Toxicology, American Academy of Clinical Toxicology, and the National Geographic Explorers Club. Previously, Dr. Erickson served as the Director for the UIC Center for Global Health and Professor of Emergency Medicine and Medical Toxicology at the University of Illinois at Chicago. Dr. Erickson also served as the Associate Dean for Faculty Affairs, Graduate Medical Education, and Continuing Medical Education at the UIC College of Medicine. He was an acting and interim Head in the Department of Emergency Medicine and has held other multifaceted appointments ranging from EM Residency Program Director to Chief of Medical Toxicology.

Timothy B. Erickson, MD is currently an emergency medicine physician at Mass General Brigham in Boston, MA where he serves as the Division Chief of Medical Toxicology in the Department of Emergency Medicine and at Harvard Medical School. Dr. Erickson is also a core faculty member at the Harvard Humanitarian Initiative in Cambridge, MA with expertise in environmental toxicology, crisis in climate change, wastewater-based epidemiology, chemical/biological/radiological/nuclear/explosive (CBRNE) threats, wilderness medicine, and emergency oncology. He has active humanitarian health projects in Nepal, Bhutan and India as well as in conflict regions of Syria and Ukraine.