our people

Meet Our Leadership Team of Talented and Experienced Professionals

Executive Leadership

Susan Schwartz McDonald, Ph.D.

Chief Executive Officer
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Michael Polster, Ph.D.

President and Chief Operating Officer
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Paul J. Abraham

Chief Financial Officer
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Client Service Leadership

Tim Sprik

Executive Vice President
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Trish Dorsey

Senior Vice President
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Adine Nahum Frank

Vice President
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Vaibhav M. Varkhedkar, BPharm, MS, MBA

Vice President
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Elaine Zanutto, Ph.D.

Vice President, Methods & Advanced Analytics
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Deepa George, Ph.D.

Senior Group Director
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Technology Leadership

Joe Stern

Vice President, Information Technology
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Ella Zelichonok

Vice President, Software Development
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Brent Whitesell

Vice President, Operations Management
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