Celia M. Witten, Ph.D., M. D. is the Director of the Office of Cellular, Tissue and Gene Therapy at the Center for Biologics Evaluation and Research (CBER), Food and Drug Administration (FDA). Between 1996 and 2005 she served as Director of the Division of General, Restorative, and Neurological Devices in the Office of Device Evaluation in the Center for Devices and Radiological Health (CDRH), Food and Drug Administration (FDA). Previous to FDA, she worked for over 10 years as a practicing physician at the National Rehabilitation Hospital (NRH) in Washington, D.C. Her educational background includes a B.A. earned at Princeton University (Magna Cum Laude), a Ph.D. from Stanford University, and an M.D. from the University of Miami School of Medicine. In addition to her academic achievements she is Board Certified in Physical Medicine and Rehabilitation.