Faculty & Staff bios

Thomas J. Kleyn, PharmD, BCPS, AAHIVP

Assistant Professor of Pharmacy Practice and Administration

College of Pharmacy

E-Mail: tkleyn@westernu.edu

Phone: (909) 469-8638


PharmD 2010
Purdue University, West Lafayette, IN

Education Experience

PGY1 Pharmacy Practice Residency 2010-2011
Indiana University Health, Indianapolis, IN

PGY2 HIV Pharmacotherapy Residency 2011-2012
University of Oklahoma Health Sciences Center, Oklahoma City, OK


Board Certified Pharmacotherapy Specialist (BCPS)
2011 Board of Pharmacy Specialties

Research Interest

Dr. Kleyn’s previous research has focused on the effect of a pharmacist on treatment outcomes in an HIV clinic and on transmitted drug resistance in antiretroviral-naïve persons. His areas of academic and research interest include motivational interviewing and improving medication adherence in people living with HIV.


Kleyn TJ, Liedtke MD, Harrison DL, et al. Incidence of Transmitted Antiretroviral Drug Resistance in Treatment-Naive HIV-1-Infected Persons in a Large South Central United States Clinic. Ann Pharmacother 2014;48:470-475.