He is Professor of Psychology and Director of the Anxiety Treatment and Research Program at Drexel University, where he also serves as Associate Dean of the College of Arts and Sciences. He also served for several years as Director of Clinical Training of Drexel's Ph.D. Program in Clinical Psychology. He is a Fellow of the Academy of Cognitive Therapy as well as the Commission for Scientific Medicine and Mental Health, and is active in several professional organizations. He is currently an Associate Editor of The Scientific Review of Mental Health Practice, and serves on the editorial boards of several additional journals, including the Journal of Anxiety Disorders.