Katherine Nguyen Williams, PhD

Katherine is a licensed supervising child and adolescent psychologist, published author, and public speaker. In addition to conducting psychological testing and individual/family therapy for children/adolescents and young adults, she is the Director of Strategic Development and Clinical Innovations at Rady Children's Hospital–San Diego and Associate Clinical Professor of Psychiatry at University of California, San Diego.


Katherine is the author of Psychology Today: The Modern Child ( and Modular Cognitive Behavioral Therapy for Children and Adolescents with Depression: A Clinician’s Guide to Individualized Treatment (available on She has spoken both regionally and nationally on a variety of topics, including diversity, implicit bias, and trauma-informed health care.