Our Team

Intertox is comprised of a multidisciplinary team of toxicologists, pharmacologists, environmental chemists, industrial hygienists, occupational physicians, epidemiologists, and regulatory policy experts working together to solve complex human health and environmental issues with innovative, cost-effective, and resourceful approaches based on sound scientific methodology.

Our team continually promotes their professional growth through participation in numerous professional organizations.



Intertox Director
Richard C. Pleus, PhD
Managing Director

Key Intertox Technical Staff
Gretchen Bruce, DABT
Senior Scientist

Lisa M. Corey, PhD
Staff Toxicologist

Susan M. Leaman, MS
Staff Toxicologist

Key Intertox Associates
Richard B. Belzer, PhD
Regulatory Policy

Erin R. Bennett, PhD
Environmental Chemist

Paul Chang, PhD
Visual Communication






Michael C. Maloney, RAC
Executive Vice President
Development and Regulatory Services







Gary Pascoe, PhD, DABT
Toxicologist

Gary Rischitelli, MD, MPH, JD
Occupational Physician, Medical Toxicologist

Barbara A. Trenary, CIH
Certified Industrial Hygienist

Professional Memberships of the Intertox Team