Justin Teeguarden

Justin Teeguarden is a Lab Fellow at Pacific Northwest National Laboratory (PNNL) and serves as Chief Science Officer for the Environmental Molecular Sciences Laboratory (EMSL) User Program. He holds a joint appointment in the Department of Environmental and Molecular Toxicology at Oregon State University, where he leads the NIH Superfund research program. With a PhD in Toxicology (University of Wisconsin-Madison, 1999) and BS in Biochemistry (UC Davis, 1990), his research integrates computational modeling, toxicology, and exposure science.

His work focuses on three core areas: 1) Computational modeling of chemical transport and biological interactions; 2) Nanoparticle fate and toxicity paradigms; and 3) Quantitative assessment of environmental estrogens in humans. This spans interdisciplinary domains including nanotoxicology, pharmacokinetics, and molecular epidemiology.

Teeguarden's publications emphasize mechanistic toxicology, computational dosimetry, and multi-omics approaches. Recent work explores circadian biology, aerosol toxicity, and high-throughput exposure assessment, frequently employing advanced mass spectrometry and computational frameworks.

As PI of the NIH Superfund program, he coordinates translational research on environmental contaminants. He maintains extensive professional service, including EPA advisory roles, National Academies committees, and editorial positions for Computational Toxicology and Nanotoxicology.