Dr. Tom Lewandowski is a toxicologist and chemist working in the Seattle, WA office of Gradient, a science consulting firm. He received his Ph.D. in toxicology from the University of Washington School of Public Health in 2000. He also holds an MPH in environmental health from the University of Michigan. Dr. Lewandowski has over 30 years of experience in the areas of risk assessment, product safety evaluation, pharmacokinetics, and metals toxicology. Current areas of particular interest include skin sensitization, cannabinoids, and chemical alternatives assessment. He is board certified as a toxicologist in both the US (DABT) and Europe (ERT). He is also a fellow of the Academy of Toxicological Sciences (ATS). He was previously an Associate Professor of environmental health at Brooklyn College/The City University of New York where he taught courses in environmental health, human physiology and sustainability. He is the author of numerous publications related to risk assessment methods (in particular the use of computational models). He is a member of the OARS WEEL committee, which reviews toxicology data to develop workplace exposure guidelines for new chemical agents. He is also currently an officer of the SOT Dermal Toxicology Specialty Section.