Paul G. Mattiuzzi, Ph.D.
License:   PSY8693   

criminal forensic psychology and clinical consultation


Paul G. Mattiuzzi, Ph.D.
Box 255841
Sacramento, CA 95865

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text: 916-538-1027

I am a 1982 graduate of the California School of Professional Psychology, Berkeley campus. Prior to receiving my Doctorate, I trained for three years as a psychological assistant and interned for three years in community mental health and psychiatric clinics. In 1983, I took a position as a staff psychologist with the California Youth Authority and continued working there until 1988. I have been practicing independently since 1986.

Although I have trained and practiced extensively as a psychotherapist, my practice has for some years been devoted almost entirely to criminal forensic psychology. I am an an expert in trial competency, insanity, and sentencing issues. I have served as a consultant to the California Department of Mental Health, conducting pre-parole evaluations of mentally disordered offenders. I have also worked for the Department of Corrections as a Hearing Officer in involuntary medication proceedings.

I work regularly on Court appointment and on referral from attorneys. I have qualified as an expert and testified throughout California. For the California Board of Psychology, I consulted on the development of the Law and Jurisprudence examination.

During one four year period, I supervised post-doctoral interns as an assistant clinical professor of psychiatry at the University of California, Davis School of Medicine.

I am a former president of the Sacramento Valley Psychological Association (SVPA) and a former president of the SVPA Forensic Division.

I am the designer and developer of the Psychology Resource Information System (, and also the curator of The Sigmund Freud Toy Museum.

I have written a number of articles about psychology that are relevant to everyday experience and everyday life. You can read them on my blog:

Criminal case consultation
Expert testimony

Areas of Expertise
Criminal Forensic Psychology
Psychological Aspects of Medical Complaints
Health/Stress Assessments

Office Information:

Clients seen only on referral from attorneys or the legal system. Currently retired and accepting cases only under unusual circumstances.