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Licensed Clinical Psychologist

Speaks Cantonese and Mandarin

Dr. William Chan is a licensed clinical psychologist (PSY33550) in California. He earned his doctorate from PGSP-Stanford Psy.D. Consortium. He received specialized postdoctoral training in mood and anxiety disorders at Pacific Anxiety Group. He received training at UC Davis and Santa Clara University to work with international students and LGBT issues. 


Dr. Chan has expertise in treating anxiety and mood disorders. He is trained in Cognitive Behavioral Therapy (CBT) and integrates other evidence-based approaches to personalize treatment based on his clients' presentations. He pays special attention to creating a trusting and safe environment to help his clients build insights and skills to learn new ways to cope with stressors and gain acceptance. He recognizes that change is scary and hard. Thus, he aims to compassionately empower his clients to effectively address their concerns head-on and face their fears so they can grow their confidence and ability to tolerate and manage emotional distress.

Dr. Chan also spends some of his time doing research. He developed a virtual reality exposure therapy for adults with social anxiety disorder. He also studies how to use chatbots to improve accessibility of psychological care to women at risk for developing an eating disorder.




Doctor of Psychology (Clinical Psychology)

PGSP-Stanford Psy.D. Consortium

Master of Science (Clinical Psychology)
PGSP-Stanford Psy.D. Consortium

Bachelor of Business Administration (Marketing)

Hong Kong University of Science and Technology


Immigration issues

(work and student and

other non-immigrant visas)

LGBT and other identity issues





Chan, W.W.*, Fitzsimmons-Craft, E.E.*, Smith A.C., Firebaugh M.L., Fowler L.A., DePietro B., Topooco N., Wilfley D.E., Taylor C.B., Jacobson N.C. (2022 Jan) The Challenges in Designing a Prevention Chatbot for Eating Disorders: Observational Study. JMIR Formative Research, 19;6(1):e28003


Fitzsimmons-Craft, E.E.*, Chan, W.W.*, Smith, A. C., Firebaugh, M.-L., Fowler, L. A., Topooco, N., DePietro, B., Wilfley, D. E., Taylor, C. B., & Jacobson, N. C. (2022). Effectiveness of a chatbot for eating disorders prevention: A randomized clinical trial. International Journal of Eating Disorders, 55(3), 343–353.


Zainal, N. H., Chan, W. W., Saxena, A.P., Taylor, C. B., Newman, M.G. (2021) 

Pilot Randomized Trial of Self-Guided Virtual Reality Exposure Therapy for Social Anxiety Disorder. Behavior Research and Therapy


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