Organization

NTP is an interagency program composed of, and supported by, three government agencies within the Department of Health and Human Services:

• The National Center for Toxicological Research (NCTR) of the Food and Drug Administration (FDA)
• The National Institute of Environmental Health Sciences (NIEHS) of the National Institutes of Health (NIH)
• The National Institute for Occupational Safety and Health (NIOSH) of the Centers for Disease Control and Prevention (CDC)

The NIEHS Director also serves as the director of NTP. The Director reports to the Assistant Secretary for Health, and receives regular input from various external groups. Rick Woychik, Ph.D., is the NIEHS and NTP Director; Brian Berridge, D.V.M., Ph.D., is NTP Associate Director and Scientific Director of the Division of the National Toxicology Program at NIEHS.