Home Practitioners Our Practitioners All of our psychiatrists, social workers, and psychologists have advanced training in their fields. In fact, we teach others in university and college mental health programs. Gail A. Barker, M.D. Cheryl M. Beach, Ph.D. Carina E. Behrens, M.D. Tamara M. Campbell, M.D., Psy.D. William P. Carney, M.D. Giuliana Centurion, D.O. Meicheng Chiang, M.D., Ph.D. Jill Chiara, M.S.W. Brett H. Clarke, M.S.W. Leslie Deckter, M.D. Anne Dudley, M.S.W. Joel Ellison, M.D. Noel Free, M.D. Lisa K. Gray, M.D. Marcia Kaplan, M.D. Velissarios Karacostas, M.D., Ph.D. Edward I. Kohn, M.D. David Leonard, M.D. Michael J. Maloney, M.D. John T. Niehaus, M.S.W. Alexandra Talks, M.S.W. William L. Tedford, M.D. James H. Thomas, M.D. Carol L. Willis, M.D.