Christopher P. Weis, Ph.D., D.A.B.T.
Bethesda, MD | chris@weistox.com
Professional Summary
Accomplished toxicologist with over 35 years of experience in toxicology, biophysics, chemistry, and environmental risk assessment. Adept at leading multidisciplinary teams to address complex health risks in emergencies and federal environmental disasters. Former Senior Advisor to the Director of NIEHS and co-chair of the White House OSTP Subcommittee on Toxics and Risks. Renowned for pioneering solutions in forensic toxicology, exposure science, and public health policy. Proven leader, mentor, and educator with a career dedicated to advancing environmental health sciences and regulatory frameworks.
Key Skills
- Toxicological Risk Assessment & Exposure Science
- Forensic Toxicology & Emergency Response
- Environmental Health Policy Development
- Public Health Communication & Leadership
- Regulatory Compliance (EPA, FDA, OSHA, etc.)
- Multidisciplinary Team Leadership
- Advanced Laboratory Design & Implementation
- Data Collection & Evidence-Based Decision Making
Professional Experience
Science Director, Principal, Weis Toxicology, LLC – Bethesda, MD (01/2022 – Present)
- - Lead strategic development of evidence-based solutions for complex public health risks.
- - Provide expert analysis on environmental exposure, occupational hazards, and toxicological challenges.
Toxicology Liaison/Senior Advisor, National Institutes of Health: NIEHS & NTP – Bethesda, MD (08/2010 – 12/2021)
- - Represented NIEHS in national and international scientific initiatives and policy development.
- - Co-chaired the White House OSTP Subcommittee on Toxics and Risks, fostering federal interagency collaboration.
- - Supported WHO’s Chemical Risk Assessment Network, connecting 70+ institutions
globally.
Education
- Ph.D. in Environmental Toxicology & Comparative Physiology – Michigan State University
- B.S. in General Biology – Grand Valley State University
Certifications and Professional Affiliations
- Diplomate, American Board of Toxicology (ABT)
- Former President, ABT Board of Directors
- Member, American Society of Testing and Materials (ASTM)
- Member, Society of Toxicology
Selected Publications
- Smalling, K.L., Romanok, K.M., et al., Environmental Science: Water Research & Technology, 2023.
- Bradley, P.M., Argos, M., et al., Science of the Total Environment, 2020.
- Weis, C.P., et al., Environmental Health Perspectives, 2016.
Full publication list available upon request.
Awards and Honors
- Silver Medal, EPA, for public health leadership during federal asbestos disaster response.
- Bronze Medal, EPA, for advancing environmental exposure science.
- President, American Board of Toxicology, 2017.
- Keynote Speaker, India National Institute of Nutrition, 2018.
Continuing Education
- Exposome Workshop, Columbia University, 2021.
- Health Aspects of Resilient Buildings, UL Research Institutes, 2023
- - ASTM Symposium on Elongate Mineral Particles, 2024.