Susan LeRoy Stewart, Ph.D.

Adjunct Professor




Public Health


Locations and Contact

UC Davis Medical Center

UC Davis Medical Center
2315 Stockton Blvd.
Sacramento, CA 95817

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Additional Numbers

Physician Referrals

800-4-UCDAVIS (800-482-3284)

Research/Academic Interests

Susan Stewart is a professor of biostatistics at UC Davis with more than 25 years of experience in health-related behavioral research. She has been responsible for the statistical aspects of health promotion studies on a variety of topics, including genetic counseling, cancer prevention and screening, tobacco and drug use, and quality of life.  She is particularly interested in issues pertaining to the measurement of health behavior, risk factors, and outcomes in diverse populations.



Center/Program Affiliation

UC Davis Comprehensive Cancer Center

Undergraduate School

A.B., Applied Mathematics, UC Berkeley, Berkeley CA 1974

Undergraduate School

M.A., Statistics, UC Berkeley, Berkeley CA 1982

Medical School

Ph.D., Statistics, UC Berkeley, Berkeley CA 1987

Chak EW, Luna R, MacDonald S, Stewart SL, Chen MS Jr, Bowlus C. Automated electronic health registry-based hepatitis B screening. J Viral Hepat. 2022 Dec 14. doi:10.1111/jvh.13784. Epub ahead of print. PMID:36514989.

Tomsich EA, Schleimer J, Wright MA, Stewart SL, Wintemute GJ, Kagawa RMC. Intimate Partner Violence and Subsequent Violent Offending Among Handgun Purchasers. J Interpers Violence. 2022 Dec;37(23-24):NP21447-NP21475. doi:10.1177/08862605211057268. Epub 2021 Dec 12. PMID:34894835.

Pallin R, Wright MA, Tomsich EA, Wintemute GJ, Stewart S, Kagawa RMC. Prior Drug-Related Criminal Charges and Risk for Intimate Partner Violence Perpetration Among Authorized Purchasers of Handguns in California. J Interpers Violence. 2022 Dec;37(23-24):NP23352-NP23373. doi:10.1177/08862605221078811. Epub 2022 Mar 25. PMID:35333106.

Tseregounis IE, Delcher C, Stewart SL, Gasper JJ, Shev AB, Crawford A, Wintemute G, Henry SG. The impact of California wildfires on patient access to prescription opioids. J Am Pharm Assoc (2003). 2022 Nov-Dec;62(6):1769-1777. doi:10.1016/j.japh.2022.05.012. Epub 2022 May 13. PMID:35660074.

Cheng J, Tsoh JY, Guan A, Luu M, Nguyen IV, Tan R, Thao C, Yu E, Lor D, Pham M, Choi J, Kim M, Stewart SL, Burke NJ. Engaging Asian American Communities During the COVID-19 Era Tainted With Anti-Asian Hate and Distrust. Am J Public Health. 2022 Nov;112(S9):S864-S868. doi:10.2105/AJPH.2022.306952. Epub 2022 Sep 15. PMID:36108257.

Chak EW, Cortez-Toledo E, Luna R, MacDonald S, Stewart SL, Cooke DT, Chen MS Jr. Electronic Population Health Tools Enhance Preventive Care for Older Adults. Am J Med. 2022 Jul;135(7):840-843. doi:10.1016/j.amjmed.2021.12.015. Epub 2022 Feb 24. PMID:35219688.

Rebhun RB, York D, Cruz SM, Judge SJ, Razmara AM, Farley LE, Brady RV, Johnson EG, Burton JH, Willcox J, Wittenburg LA, Woolard K, Dunai C, Stewart SL, Sparger EE, Withers SS, Gingrich AA, Skorupski KA, Al-Nadaf S, LeJeune AT, Culp WT, Murphy WJ, Kent MS, Canter RJ. Inhaled recombinant human IL-15 in dogs with naturally occurring pulmonary metastases from osteosarcoma or melanoma: a phase 1 study of clinical activity and correlates of response. J Immunother Cancer. 2022 Jun;10(6):e004493. doi:10.1136/jitc-2022-004493. PMID:35680383.

Chu JN, Stewart SL, Gildengorin G, Wong C, Lam H, McPhee SJ, Chen MS, Bastani R, Maxwell AE, Taylor VM, Nguyen TT. Effect of a media intervention on hepatitis B screening among Vietnamese Americans. Ethn Health. 2022 Feb;27(2):361-374. doi:10.1080/13557858.2019.1672862. Epub 2019 Oct 14. PMID:31608675.

Pulvers K, Rice M, Stewart SL, Tong E. Tobacco Tracker: A New Tool to Support College Smoke and Tobacco Free Policies. Nicotine Tob Res. 2022 Feb 1;24(2):241-249. doi:10.1093/ntr/ntab187. PMID:34671812.