About
PD&A offers forensic experts in psychiatry, psychology, neuropsychology, neurology, pathology, nursing, social work, criminal behavior analysis, police, corrections, security, and toxicology. For the 28 years we've been operating as a group we've consistently recruited and vetted leaders in their respective disciplines known for their high integrity who share a common commitment to conduct top quality, objective evaluations and to thoroughly and clearly document and communicate their data, findings, and opinions.
The scores of experts associated with the firm have massive experience—including evaluations, consulting, testimony, research, and peer-reviewed publications—on a wide range of topics, most conspicuously including competence, insanity, homicide, sexual crimes and misconduct, suicide, workplace violence, the effects of trauma, and civil litigation arising from traumatic events, including accidents, suicide, homicide, sexual assaults, child sexual abuse, and workplace violence.
For many cases, we are able to offer the services of the nation’s best expert on the critical issue in the case. In others, we may offer a selection of experts who are equally qualified. During an initial, free consultation with PD&A you may learn of other ways that you might be assisted.
The firm was founded in 1996 by forensic psychiatrist Park Dietz, MD, MPH, PhD, and grew out of a practice he began in 1978 while teaching at Harvard Medical School.