Position Title
2025-2026
Mark S. Johnson, PhD, DABT, Fellow ATS is experienced in environmental and occupational toxicology where he has authored over 150 peer-reviewed publications, book chapters, and technical reports. He is the past president of the Society of Environmental Toxicology and Chemistry, North America, and is the past Director of Toxicology of the Defense Centers for Public Health – Aberdeen, where he worked extensively in the evaluation of the toxicity of military unique compounds. He served on several NATO and EPA panels and is an ad hoc member of the Science Advisory Committee on Chemicals. Dr. Johnson is also charter member of the International Board of Environmental Risk Assessment (IBERA). He currently is a senior editor for Integrated Environmental Assessment and Management in the area of Environmental Policy and Regulation, and adjunct faculty at the Department of Epidemiology, Biostatistics, and Environmental (Public) Health at Old Dominion University.
Dr. Johnson is a fellow and a member of the Board of Directors of the Academy of Toxicological Sciences, Past chair of the Tri-Service Toxicology Consortium (TSTC), past Steering Committee Chair of the Joint Army-Navy-NASA-Air Force (JANNAF) Subcommittee on Safety and Environmental Protection, the past president of the American Board of Toxicology (ABT).
Mentee: Jalyn Lawrence