Dr. MacIntyre is dual board-certified in general and forensic psychiatry by the American Board of Psychiatry and Neurology. He has been qualified as an expert witness and provided testimony in jury trials, bench trials, and depositions across criminal and civil matters in California Superior Courts, with experience spanning competency evaluations, criminal responsibility, violence risk, and civil psychiatric injury.
Dr. MacIntyre serves as a panel psychiatrist for the Los Angeles County and Fresno County Superior Courts and conducts forensic psychiatric evaluations at the Veterans Affairs Greater Los Angeles Healthcare System. He is a Qualified Medical Examiner (QME) certified by the State of California and an expert reviewer for the Medical Board of California.
He is core faculty and Assistant Program Director of the UCLA Forensic Psychiatry Fellowship at the David Geffen School of Medicine, where he trains the next generation of forensic psychiatrists. His peer-reviewed publications address criminal responsibility, neuroethics, artificial intelligence in psychiatry, psychedelic medicine, and forensic evaluation methodology — work that reflects sustained scholarly engagement with the issues most likely to arise in complex litigation.
Dr. MacIntyre provides forensic psychiatric evaluations, expert reports, and testimony across a broad range of criminal and civil matters. Each evaluation is grounded in current clinical science, relevant legal standards, and direct familiarity with California courts. Referrals are accepted from defense counsel, prosecution, and civil defense attorneys.
Dr. MacIntyre accepts criminal and civil referrals and works with defense counsel, prosecution, and civil defense. He is available for case consultation prior to formal retention.
