W. Doyle Gentry, Ph.D. W. Doyle Gentry, Ph.D., during his tenure at Duke University Medical School and the University of Texas Medical Branch, Galveston, Doyle authored over 100 professional publications, including the Handbook of Behavioral Medicine and 3 recent self-help books on anger management. He is a Fellow in APA Division 38 (Health Psychology) and the founding editor of the Journal of Behavioral Medicine.