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Your Environment. Your Health.

National Toxicology Program (NTP) Division

The National Institute of Environmental Health Sciences (NIEHS) is home to the National Toxicology Program , a Health and Human Services interagency program dedicated to testing and evaluating substances in our environment.

Richard Woychik, Ph.D.
Rick Woychik, Ph.D.
Acting Director, NIEHS & NTP
Tel 919-541-3201
Fax 919-541-5136
P.O. Box 12233
Mail Drop B2-06
Durham, N.C. 27709
Brian Berridge
Brian R. Berridge, D.V.M., Ph.D., D.A.C.V.P.
Associate Director, National Toxicology Program
Scientific Director, National Toxicology Program Division
Tel 984-287-3111
P.O. Box 12233
Mail Drop K2-02
Durham, N.C. 27709

NTP Structure

As Acting Director of NIEHS, Rick Woychik, Ph.D. also serves as the Director of NTP. Brian Berridge, D.V.M, Ph.D., serves as NTP Associate Director and Director of the NTP Division, which is housed at NIEHS. Berridge provides daily oversight and guidance to the Program.

NTP is comprised of three core agencies:

National Toxicology Program Organizational Chart

DNTP Structure

The National Toxicology Program Division oversees and carries out the activities of NTP.

The Division is responsible for carrying out the goals of NTP including:

  • Providing toxicological evaluations on substances of public health concern
  • Developing and validating improved toxicology methods (more sensitive, specific, and rapid)
  • Developing approaches and generating data to strengthen the science base for risk assessments
  • Communicating results with all stakeholders
National Toxicology Program Organization Chart Office of the Scientific Director Office of the Scientific Director Office Nomination and Selection Office of Data Science Deputy Division Director for Research Deputy Division Director for Policy Office of Liaison, Policy, and Review Offce of the Report on Carcinogens Office of health Assessment and Translation Biomolecular Screening Branch Cellular and Molecular Pathology Branch NTP Laboratory Program Operations Branch Toxicology Branch

The National Toxicology Program Division is comprised of four branches and the NTP Laboratory, as well as the five offices in the Division Office.

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