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HEI Staff
Directory of HEI staff. Click on a person's name for contact information.
Daniel S. Greenbaum
President
Robert O’Keefe
Vice President
Rashid Shaikh
Director of Science
Jacqueline C. Rutledge
Director of Finance and Administration
Kristen Mann
Corporate Secretary
Sharman Andersen
Science Administrative Assistant
Hanna Boogaard
Consulting Senior Scientist
Kelley-Anne Clisham
Executive Assistant
Aaron J. Cohen
Consulting Principal Scientist
Maria G. Costantini
Principal Scientist
Philip J. DeMarco
Compliance Manager
Hope Green
Publications Associate
Kathryn Liziewski
Research Assistant
Allison Patton
Staff Scientist
Hilary Selby Polk
Managing Editor
Robert Shavers
Operations Manager
Annemoon M. van Erp
Managing Scientist
Donna J. Vorhees
Director of Energy Research
Katherine Walker
Principal Scientist