Duncan B Clark, MD, PhD

Professor of Psychiatry and Pharmaceutical Sciences

Areas of Expertise

  • Substance Use Disorders
  • Children & Adolescents
  • Sleep & Circadian Health
Duncan B Clark, MD, PhD
Expertise & Interests Selected Publications Education & Credentials Related News

Expertise & Interests

Research Interests

Adolescent substance use; Adolescent cognition & brain development; Adolescent sleep

Clinical Interests

Adolescent substance use disorders

Education Interests

Research mentorship

Selected Publications

  1. Kiss O, Shaska A, Muller-Oehring EM, Fitzgerald DH, Hasler BP, Franzen PL, Clark DB, Baker FC. Assessment of sleep measures and their agreement: Youth-reported, caregiver-reported, and Fitbit-derived data in a large early adolescent cohort. SLEEP 48(7): zsaf065, 2025. PMID: 40087898 [doi.org/10.1093/sleep/zsaf065]
  2. Hasler BP, Oryschkewych N, Wallace ML, Clark DB, Siegle GJ, Buysse DL. Circadian phase in high school students: Weekday-weekend shifts and relationships to other sleep/circadian characteristics. SLEEP 48(4), zsaf031, 2025. PMID: 39901722; PMCID 11985389 [doi.org/10.1093/sleep/zsaf031]
  3. Clark DB, Fisher CB, Bookheimer S, Brown S, Evans JH, Hopfer C, Hudziak J, Montoya I, Murray M, Pfefferbaum A, Yurgelun-Todd D. Biomedical ethics and clinical oversight in multisite observational neuroimaging studies with children and adolescents: The ABCD experience. Developmental Cognitive Neuroscience 32, 143-154, 2018. PMID: 28716389; PMCID: PMC5745294.
  4. Clark DB, Chung T, Martin CS, Hasler BP, Fitzgerald D, Luna B, Brown SA, Tapert SF, Brumback T, Cummins K, Pfefferbaum A, Sullivan EV, Pohl KM, Colrain I, Baker FC, De Bellis MD, Nooner KB, Nagel BJ. Adolescent executive dysfunction in daily life: Relationships to risks, brain structure and substance use. Frontiers in Behavioral Neuroscience 11 (223), 1-14, 2017. PMID: 28716389; PMCID: PMC5694208.
  5. Infante MA, Eberson SC, Zhang Y, Brumback T, Brown SA, Colrain IM, Baker FC, Clark DB, De Bellis M, Goldston D, Nagel BJ, Nooner KB, Zhao Q, Pohl KM, Sullivan EV, Pfefferbaum A, Tapert SF, Thompson WK. Adolescent binge drinking is associated with accelerated decline of gray matter volume. Cerebral Cortex 32(12), 2611-2620, 2022. [doi: 10.1093/cercor/bhab368] PMID: 34729592; PMC9201595
  6. Suffoletto B, Clark DB, Lee C, Mason M. Development and preliminary testing of a secure large language model-based chatbot for brief alcohol counseling in young adults. Drug and Alcohol Dependence 272: 112697, 2025. PMCID: PMC12207782; PMID: 40334327 [doi.org/10.1016/j.drugalcdep.2025.112697]
  7. Clark DB, Martin CS, Chung T, Gordon AJ, Fiorentino L, Tootell M, Rubio DM. Screening for underage drinking and DSM-5 alcohol use disorder in rural primary care practice. The Journal of Pediatrics 173, 214-220, 2016. PMID: 2705991; PMCID: PMC4884494
  8. Clark DB. Pharmacotherapy for adolescent alcohol use disorder. CNS Drugs 26(7): 559-569, 2012 [PMID: 22676261]
  9. Clark DB, Moss HB: Providing alcohol-related screening and brief interventions to adolescents through health care systems: Obstacles and solutions. PLoS Medicine 7(3): 1-4, 2010 [e1000214] [PMID: 20231870; PMC 2834707
  10. Clark DB, Gordon AJ, Ettaro LE, Owens JM, Moss HB: Screening and brief interventions with underage drinkers. Mayo Clinic Proceedings 85(4): 380-391, 2010 [PMID: 20360296; PMC2848426]
  11. Clark DB. Psychopharmacology for adolescents with substance use disorders. In Douaihy A. Addiction Medicine for Non-Specialists. Oakstone CME 2025.
  12. Clark DB. Adolescent substance use disorders. In Douaihy A, Daley DC (Ed.), Substance Use Disorders: Pittsburgh Pocket Psychiatry Series. [Series Editors: Kupfer DJ, Travis M, Horner M] Oxford University Press, New York, NY; 2014, pp. 331-336

Education & Credentials

Education & Training

Education
MD, Harvard University
Education
PhD, Psychology, University of California, Los Angeles
Internship
Clinical Psychology, University of California, Los Angeles
Internship
Psychiatry and Medicine, Stanford University
Residency
Psychiatry, Stanford University
Postdoctoral
Psychiatry, Stanford University
Postdoctoral
Clinical Psychology, University of California, Los Angeles

Professional Affiliations

  • Member, Research Society on Alcoholism

Selected Honors & Awards

  • Marie H. Eldredge Research Award, American Psychiatric Association
  • National Resident Research Award, American Psychiatric Association

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