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Nancy A. Haug, PhD


Professor, Department of Psychology

Contact Information:

Other Positions:

Core Faculty


PGSP-Stanford PsyD Consortium


PhD, Clinical Psychology and Behavioral Medicine, University of Maryland, Baltimore County
MA, Counseling Psychology, Loyola University Maryland
BS, Psychology, Saint Joseph’s University


Nancy A. Haug, PhD is Professor in the Department of Psychology at Palo Alto University. She is core faculty in the PGSP-Stanford Psy.D. Consortium, and Adjunct Clinical Professor in the Department of Psychiatry and Behavioral Sciences at Stanford University School of Medicine. Dr. Haug leads the Harm Reduction and Addiction Treatment Laboratory at Palo Alto University and is the faculty advisor for the Graduate Student Association for Psychedelic Studies. She has ongoing collaborations and a teaching role in the Stanford Psychiatry Addiction Medicine Program. Her current research interests include implementation of evidence-based practices in addiction treatment, harm reduction for substance use, cannabis vaping and psychedelic-assisted psychotherapy.

Dr. Haug earned a doctoral degree in Clinical Psychology and Behavioral Medicine from the University of Maryland Baltimore County. She was mentored by Dr. Carlo DiClemente, co-founder of the Transtheoretical Model of Change. She also spent over seven years at the Johns Hopkins School of Medicine Behavior Therapy Treatment Research Center. At the Center for Addiction and Pregnancy, Dr. Haug was a project director for several clinical trials studying behavioral interventions for pregnant women with substance use disorders. Dr. Haug completed a clinical internship and postdoctoral fellowship at University of California, San Francisco (UCSF) and San Francisco General Hospital (SFGH) in public service and minority mental health. She was on the SFGH medical staff as an attending psychologist where she taught medical students and mentored psychology fellows. Dr. Haug was a faculty member in the UCSF School of Medicine Department of Psychiatry and an Instructor at UC Berkeley Extension in the Alcohol and Drug Abuse Studies Program.

Dr. Haug is a licensed psychologist in California since 2004 and maintains a private practice in Los Gatos, CA. She has clinical expertise in evidence-based treatments for substance use disorders such as motivational interviewing, cognitive-behavioral and mindfulness-based therapies, such as ACT and DBT. She also has long-standing clinical interest in the treatment of eating and weight disorders, as well as women's behavioral health.

Areas of Interest:

Addiction, smoking cessation, substance use treatment; behavioral medicine; cannabis/marijuana; health behavior change; eating and weight disorders, nutrition and body image; psychedelics/hallucinogens; women’s health.

Selected Publications:

*indicates student co-author; ^denotes senior authorship

Kucsera, A.,* Suppes, T. & Haug, N. A.^ (2023). Psychologists’ and psychotherapists’ knowledge, attitudes, and clinical practices regarding the therapeutic use of psychedelics. Clinical Psychology & Psychotherapy.

Haug, N. A., Wadekar, R.,* Sottile, J. E.,* & Barry, R.,* (2023). Risk for ecstasy use disorder and other substance use among international users of recreational ecstasy/Molly/MDMA. Journal of Psychoactive Drugs

Sottile, J. E.,* Macia, K.,* Wickham, R., & Haug, N.A.^ (2023). Development and initial validation of an MDMA/Ecstasy motives assessment. Addictive Behaviors, 136.

Bielenberg, J.*, Swisher, G.*, Lembke, A., & Haug, N. A.^ (2021). A systematic review of stigma interventions for providers who treat patients with substance use disorders. Journal of Substance Abuse Treatment, 131.

Rothberg, R.*, Azhari, N., Haug, N. A., & Dakwar, E. (2021). Mystical-type experiences occasioned by ketamine mediate its impact on at-risk drinking: Results from a randomized, controlled trial. Journal of Psychopharmacology, 35(2),150-158.

Haug, N. A., Morimoto, E. E.*, & Lembke, A. (2020). Online mutual-help intervention for reducing heavy alcohol use. Journal of Addictive Diseases, 38(3), 241-249.

Haug, N. A., Padula, C. B., Sottile*, J. E., Vandrey, R., Heinz, A., & Bonn-Miller, M. O. (2017). Cannabis use patterns and motives: A comparison of younger, middle-aged and older medical cannabis patients. Addictive Behaviors, 72, 14-20.

Haug, N. A., Kieschnick* D., Sottile*, J., Babson, K. A., Vandrey, R., & Bonn-Miller, M. O. (2016). Training and practices of cannabis dispensary staff. Cannabis and Cannabinoid Research, 1(1), 244-251.

Haug, N. A., Bielenberg*, J.,Linder, S. H., & Lembke, A. (2016). Assessment of provider attitudes toward #naloxone on Twitter. Substance Abuse, 37(1), 35-41. 

Websites and Other Relevant Links:

At a Crossroads: Medical Cannabis and Mental Health

Interview and article with Livescience

Coverage of published study on Vice

Calm - Expert Review

Headspace - Expert Review

Private practice website