Additional Titles & Roles
- Director, PGY2 Substance Use Disorders Rotation
- Assistant Professor of Public Health
Education & Training
- Residency: Washington University School of Medicine, St. Louis, MO, 2022
- M.P.H.: Mount Sinai School of Medicine, 2018
- M.D.: Mount Sinai School of Medicine, 2018
- B.A.: Columbia University, 2014
Major Awards
- Parker Young Investigator Award, WUSM, 2024
- WUSM Dept. of Psychiatry Excellence in Teaching Award, 2023
- ASAM Ruth Fox Scholarship, 2023
- CPDD Travel Award for Early Career Investigators; ASAM NIDA Young Investigator Award; ASCP New Investigator Award, AMERSA Travel Award, 2022
- Eli Robins Award for excellence in research, teaching and clinical psychiatry, WUSM, 2022
- APA Psychiatric Research Fellowship; APA Research Colloquium for Junior Psychiatrist Investigators, 2022
Areas of Clinical Interest
Substance use disorders
Research Interests
Kevin specializes in using routinely-collected health care data to study mental health treatment gaps in populations underrepresented in conventional human subjects research. He has a particularly strong interest in studying disparities in psychiatric diagnoses and the rational prescribing and deprescribing of controlled substances (i.e., prescription stimulants, opioids, benzodiazepines). Kevin’s lead-author research has been published in journals such as the American Journal of Psychiatry, Obstetrics & Gynecology, Nature Mental Health, and multiple BMJ and JAMA network publications. He has served on study section/grant review panels for NIH, CPDD, and WashU ICTS and received a 2024 JAMA Psychiatry top reviewer award. For more information: https://sites.wustl.edu/kevinxulab/about-the-principal-investigator/
Recent Publications
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Educational disparities in alcohol-related liver disease mortality in the 21st century: Beyond deaths of despair?
Grucza, R., Hwang, J. J., Scherrer, J. F., Bello, J. K., Gebauer, S. C., Huang, R., Salas, J. & Xu, K. Y., Dec 2025, In: Alcohol: Clinical and Experimental Research. 49, 12, p. 2754-2765 12 p.
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Racialized Black–White Economic Segregation and Major Chain Yoga Studio Locations in Major U.S. Metropolitan Areas
Xu, K., Ling, R., Banks, D. E. & Ku, B. S., Dec 2025, In: AJPM Focus. 4, 6, 100417.
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Correction to: Buprenorphine and postpartum contraception utilization among people with opioid use disorder: a multi-state analysis (Addiction Science & Clinical Practice, (2025), 20, 1, (1), 10.1186/s13722-024-00530-1)
Xu, K. Y., Bello, J. K., Buss, J., Jones, H. E., Bierut, L. J., Stwalley, D., Szlyk, H. S., Martin, C. E., Kelly, J. C., Carter, E. B., Krans, E. E. & Grucza, R. A., Dec 2025, In: Addiction Science and Clinical Practice. 20, 1, 24.
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Buprenorphine and postpartum contraception utilization among people with opioid use disorder: a multi-state analysis
Xu, K. Y., Bello, J. K., Buss, J., Jones, H. E., Bierut, L. J., Stwalley, D., Szlyk, H. S., Martin, C. E., Kelly, J. C., Carter, E. B., Krans, E. E. & Grucza, R. A., Dec 2025, In: Addiction Science and Clinical Practice. 20, 1, 1.
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Trends in Hallucinogen-Related Emergency Department and Hospital Admissions, 2016 to 2023
Steinle, J. T., Gong, L., Buss, J. L., Shankar, S., Siegel, J. S., Cabassa, L. J., Ling, R., Huang, R., Adams, D. R., Cavazos-Rehg, P., Agrawal, A., Nicol, G. E., Grucza, R., Waken, R. J. & Xu, K. Y., Nov 13 2025, In: JAMA Network Open. 8, 11, e2543453.