Regional Director, National Health Service Corps, Dept of Health and Huiman Services, 1978-1984

Director, Office of Planning and Evaluation, NIDCR, 1984-1988

Deputy Director, Epidemiology and Oral Disease Prevention  Program, NIDCR, 1988-1990

Director, Research Training and Career Development, NIDCR, 1990-2002

Senior Advisor to Chief Dental Officer, U.S. Public Health Service, 2002-2006

Adjunct Professor, Division of Preventive and Restorative Sciences, University of Pennsylvania School of Dental Medicine, 2006-2023

Board of Advisors, Columbia University College of Dental Medicine, 2010-2023