Dr. I. Leon Smith
President & CEO

Dr. I. Leon Smith is President and Chief Executive Officer of Professional Examination Service (PES), an office he has held since January 1, 1998. Dr. Smith joined PES as a Division Director in 1979, was promoted to Vice-President for Programs that same year, and subsequently became Senior Vice-President in 1993.

Dr. Smith has a broad experience in managing large-scale examination programs for licensure and certification organizations and in conducting research programs and policy studies. He is an acknowledged expert on credentialing policy and practice and has presented and published on issues related to credentialing assessment.

Senior Staff

Mary F. Browne, Vice President for Programs
Bill Callahan, Chief Technology Officer
Kenneth J. Doucet, Vice President for Business Development
Zuru Du, Research Scientist and Director of Statistics and Scoring Services
Sandra Greenberg, Vice President of Research & Development and Public Service
Kirk Lee, Chief Operating Officer
Jeffrey Mohn, Chief Financial Officer
Steven Peluso, General Counsel
John Schultz, Vice President of Operations
Maureen Tillwitz, Director of Human Resources