Toxicology Team

The Noblis team of toxicologists has an average of more than 25 years of experience in toxicology and risk assessment. In addition, every member of our staff holds a doctorate degree in one of the biological and chemical sciences.

John M. DeSesso, Ph.D., ATS
Toxicology Group Director
703-610-2130
jdesesso@noblis.org

Ivan J. Boyer, Ph.D., DABT
703-610-2117
iboyer@noblis.org

James L. Buthod, Ph.D.
703-610-2111
jbuthod@noblis.org

Catherine E. Campbell, Ph.D.
703-610-2037
catherine.campbell@noblis.org

Raymond J. Cologna, Ph.D.
703-610-2389
raymond.cologna@noblis.org

Stephen M. Hsia, Ph.D.
703-610-2160
mhsia@noblis.org

Raymond S. Kutzman, Ph.D., DABT
210-403-5405
rkutzman@noblis.org

Richard D. Mavis, Ph.D., DABT
952-440-6289
rmavis@noblis.org

Katharine Jennings, Ph.D.
katharine.jennings@noblis.org

Jonathan Phillips, Ph.D.
jonathan.phillips@noblis.org

Ronald C. Porter, Ph.D.
210-403-5406
ronald.porter@noblis.org

David C. Roberts, Ph.D.
703- 610-2195
droberts@noblis.org

Jane S. Tang, Ph.D.
703-610-2030
jane.tang@noblis.org

Robert D. Taylor, Ph.D.
703- 610-2510
btaylor@noblis.org

Amy Lavin Williams, Ph.D.
703-610-2527
amy.williams@noblis.org