Forensic & Clinical Psychology

Brent J. Oneal, Ph.D. is a forensic and clinical psychologist.


Dr. Brent Oneal

Dr. Oneal is a Licensed Clinical Psychologist in Washington State who specializes in forensic psychological assessment. Dr. Oneal maintains a private practice in Seattle, Washington and is on Clinical Medical Staff at Harborview Medical Center and Child Study & Treatment Center.


Practice Areas

Dr. Oneal conducts forensic psychological evaluations for juvenile justice and criminal matters; including adjudicative competencies, mental state defenses, juvenile declination/transfer, and risk assessment (sexual and non-sexual). Dr. Oneal provides consultation and training to a variety of professionals and organizations and also maintains a small clinical assessment and therapy practice focused on Cognitive Behavioral Therapy (CBT) and Dialectical Behavior Therapy (DBT) treatment principles.
Dr. Oneal is a skillful psychologist who is fair-minded and compassionate. I have worked with Dr. Oneal on both sides of the aisle during my career. As a public defender, I cross-examined Dr. Oneal many times when he testified as a State witness against my clients. As an adverse witness, he was always unbiased, accurate, and extremely pleasant. Over the past 10 years in private practice, I have engaged him to evaluate numerous clients. His reports are always thorough, well-written, and have helped me persuasively and successfully tell my clients’ stories in court.”
Cooper Offenbecher

Attorney at Law
Allen, Hansen, Maybrown & Offenbecher, P.S.

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