The ILSI Health and Environmental Sciences Institute (HESI) is a non-profit scientific organization that brings together scientists from around the world from industry, regulatory agencies and other governmental institutions, academia, and other research organizations to address scientific questions that have the potential to be resolved through creative application of intellectual and financial resources. HESI was established in 1989 to provide an international forum to advance the understanding of scientific issues related to human health, toxicology, risk assessment, and the environment.
Michael P. Holsapple, Ph.D. 
Executive Director
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HESI Managers
Nancy Doerrer, MPH 
Senior Scientific Program Manager
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Syril Pettit, MPH 
Senior Scientific Program Manager
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Karluss Thomas, MPH 
Senior Scientific Program Manager
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HESI Administrative Staff
Eric Moore 
Administrative Assistant
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