Dr. Matto completed medical school at University of California, Davis and finished both his psychiatry residency and forensic psychiatry fellowship at University of California, San Francisco (UCSF).  Dr. Matto remained on faculty at UCSF for seven years, working in emergency and urgent care settings at San Francisco VA Medical Center as well as serving as Associate Program Director of the UCSF Psychiatry Residency. 

Dr. Matto is currently the Medical Director of the OHSU Intercultural Psychiatry Program and the Torture Treatment Center of Oregon.  In addition to clinical and leadership duties in this role, he also teaches in the OHSU Forensic Psychiatry Fellowship Training Program.  Dr. Matto is active in the American Academy of Psychiatry and the Law where he serves as Co-Chair of the Committee for Human Rights and National Security and the Chair of the Committee for Trauma and Stress.  Dr. Matto's forensic practice focuses on trauma and human rights cases, and he has consulted and testified on these topics nationally and internationally.