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. Tamara M. Campbell, M.D., Psy.D. William P. Carney, M.D. Janet D. Castellini, Psy.D., C.S. Giuliana Centurion, D.O. Meicheng Chiang, M.D., Ph.D. Jill Chiara, M.S.W. Brett H. Clarke, M.S.W. Anne Dudley, M.S.W. Noel Free, M.D. Clayton K. Gotwals, M.D. Lisa K. Gray, M.D. Marcia Kaplan, M.D. Velissarios Karacostas, M.D., Ph.D. Edward I. Kohn, M.D. Robert Lubow, M.D. Michael J. Maloney, M.D. Deana J. McReynolds, D.O. John T. Niehaus, M.S.W. Janice Singerman, M.D. William L. Tedford, M.D. James H. Thomas, M.D. Martyn Whittingham, Ph.D., CGP, FAGPA. Ann Wierwille, M.D. Carol L. Willis, M.D. Joel Ellison, M.D.