About Dr. Katherine Williams



Katherine Williams, Ph.D., is a licensed clinical psychologist who specializes in psychological assessments for children, adolescents, and young adults. She earned her bachelor’s degree at the University of California at San Diego (UCSD), master’s degree at Pepperdine University, and doctoral degree at Loma Linda University with highest honors. Dr. Williams completed her rigorous clinical training at Harbor-UCLA Child & Adolescent Outpatient Psychiatry, UCSD Department of Psychiatry, and Rady Children’s Hospital at San Diego.

Dr. Katherine Williams recently published a critically lauded treatment book, Modular Cognitive Behavioral Therapy for Depressed Children and Adolescents, which quickly landed in the Top 5 Best-Selling List for CBT books on Amazon.com.  She is a published author and expert testing consultant to schools and clinics. She has successfully advocated for effective educational accommodations and modifications for her clients at private schools, charter schools, and public schools. Dr. Williams founded and currently directs the Anxiety & OCD Clinic (AOC) and Autism Assessment Program at Rady Children’s Outpatient Psychiatry.

Dr. Katherine Williams served as Chief Intern at the UCSD/VA Psychology Internship Program, and has earned multiple professional awards, including Clinician of the Year by the San Diego Group Forum. Dr. Williams has over 14 years of experience administering psychological assessments to children, adolescents, and young adults. She trains psychologists and advanced doctoral students on the administration, scoring, interpretation, and report-writing of comprehensive psychological assessments.

Dr. Katherine Williams is a faculty member at UCSD School of Medicine’s Department of Psychiatry and a supervising child & adolescent psychologist at Rady Children’s Hospital. She was recently named the Director of Strategic Development and Clinical Innovations. She frequently provides seminars, talks, and trainings on psychological assessment. She maintains an active teaching role; she currently teaches and trains UCSD medical students, psychiatry fellows, psychology interns, and marriage & family therapists.