Benjamin H. Han, MD, MPH
University of California San Diego, Department of Medicine, Division of Geriatrics and Gerontology - Assistant Professor
Email: b2han@health.ucsd.edu
Education
MD, State University of New York - SyracuseMPH, Johns Hopkins School of Public Health
BA, English, Wesleyan University
Research Interests
Geriatrics, Methadone, Health disparities, Substance use BIO
Benjamin Han is a geriatrician and health services researcher in the Division of Geriatrics and Gerontology, Department of Medicine at UC San Diego. His research focuses on unhealthy substance use among older adults, and caring for adults with multiple chronic conditions in opioid treatment programs. Projects
Principal Investigator, Measuring Social Isolation, Loneliness, and Intersectional Stigma among Older Adults with Opioid Use Disorder. Active
Principal Investigator, Trajectories of Social Isolation and Loneliness among Older Adults Living with HIV Who Use Methamphetamine. Active
Principal Investigator, Chronic Disease and Health Outcomes of Older Adults with Opioid Use. Completed
Principal Investigator, Geriatric Conditions and Functional Status in Middle-Aged and Older Adults with Opioid Dependence. Completed
Publications
Recent
Han BH, Yang KH, Cleland CM, Palamar JJ (2025).
Trends in past-month cannabis use among older adults
JAMA Internal Medicine, 185 (7), 881-883. doi: 10.1001/jamainternmed.2025.1156. PMCID: PMC12131166.
Trends in past-month cannabis use among older adults
JAMA Internal Medicine, 185 (7), 881-883. doi: 10.1001/jamainternmed.2025.1156. PMCID: PMC12131166.
Han BH, Brennan JJ, Kepner WE, Chen S, Lin S, Carley JA, Larson J, Castillo EM (2025).
Trends in stimulant-related emergency department visits among adults in California, 2017-2021
American Journal of Emergency Medicine, 93, 94-98. doi: 10.1016/j.ajem.2025.03.051.
Trends in stimulant-related emergency department visits among adults in California, 2017-2021
American Journal of Emergency Medicine, 93, 94-98. doi: 10.1016/j.ajem.2025.03.051.
Fahey MC, Gutkind S, Kleykamp BA, McClure EA, Han B, Mauro PM (2025).
Prevalence and correlates of tobacco and cannabis co-use among late middle-aged (50-64 years) and older adults (65+ years) in the United States using pooled national survey data
American Journal on Addictions [Epub 2025 Jun 6]. doi: 10.1111/ajad.70053.
Prevalence and correlates of tobacco and cannabis co-use among late middle-aged (50-64 years) and older adults (65+ years) in the United States using pooled national survey data
American Journal on Addictions [Epub 2025 Jun 6]. doi: 10.1111/ajad.70053.
Pytell JD, Robertson ML, Han BH, Martinez NG (2025).
Opioid use disorder in older adults: A narrative review
Current Psychiatry Reports, 14, 6. doi: 10.1007/s13670-025-00431-4.
Opioid use disorder in older adults: A narrative review
Current Psychiatry Reports, 14, 6. doi: 10.1007/s13670-025-00431-4.
Eger WH, Paltin D, Ross JD, Bailey K, Nguyen A, Solomon EM, Bartholomew TS, Han BH, Bazzi AR (2025).
Naloxone distribution amidst shifting drug use patterns: Insights from a needs-based syringe services program
Drug and Alcohol Dependence, 259, 112591. doi: 10.1016/j.drugalcdep.2025.112591.
Dr. Han's MyBibliography Profile
Naloxone distribution amidst shifting drug use patterns: Insights from a needs-based syringe services program
Drug and Alcohol Dependence, 259, 112591. doi: 10.1016/j.drugalcdep.2025.112591.
Selected Press