Daniel Tomaszewski, PharmD, PhD
Faculty Directory

Daniel TomaszewskiPharmD, PhD

Daniel TomaszewskiPharmD, PhD

Associate Professor of Pharmaceutical and Health Economics

Department of Pharmaceutical and Health Economics

Daniel Tomaszewski completed both his PharmD and PhD at the University of Minnesota College of Pharmacy. Prior to joining USC Mann faculty, he had been an assistant professor of pharmacy administration at Chapman University since 2014. His expertise includes working directly with payors and healthcare decision-makers to optimize medication use and ensure cost effective implementation of pharmacy and health benefits. In addition, Tomaszewski has taught a wide variety of courses within doctorate of pharmacy and graduate programs with a focus on managed care and global perspectives on medication use within the U.S. healthcare system. With experience in managed care, pharmacy practice and academia, he offers a unique perspective as an instructor, researcher and pharmacist.

Areas of Expertise

  • Drug pricing
  • Health Care Policy
  • Medication Safety
  • Pharmacy
  • Medication Adherence
  • Managed Care
  • Education

    University of Minnesota


    University of Minnesota


  • Links
  • Selected Articles

    National gender differences in the prescribing of opioid medications from 2006 to 2015

    Journal of Opioid Management

    2020 Retrospective analysis of data from The National Ambulatory Medical Care Survey from January 1, 2006 to December 31, 2015. Eligible patients were at least 18 years old on the date of the physician office visit. Data were collected on patient demographics and clinical factors. Data were analyzed using bivariate and multivariate logistic regression models to explore differences in opioid prescribing among men and women. Due to the large sample size, the significance level was set to p < 0.001.

    Read More

    Exploring the Relationship of Digital Information Sources and Medication Adherence

    Computers in Biology and Medicine

    2019 We present a retrospective analysis of data collected in the United States from the 2015 National Consumer Survey on the Medication Experience and Pharmacists' Role in order to model the relationship between health information sources and medication adherence and perception. Our results indicate that while the digital age has presented prescription users with many non-traditional alternatives for health information, the use of digital content has a significant negative correlation with pharmaceutical adherence and attitudes toward medication.

    Read More

    Trends in Opioid Use in Pediatric Patients in US Emergency Departments From 2006 to 2015

    The Journal of the American Medical Association

    2018 The use of opioids to treat pain in pediatric patients has been viewed as necessary; however, this practice has raised concerns regarding opioid abuse and the effects of opioid use. To effectively adjust policy regarding opioids in the pediatric population, prescribing patterns must be better understood.

    Read More

    Evaluating Factors Impacting Medication Adherence Among Rural, Urban, and Suburban Populations

    The Journal of Rural Health

    2018 This is a retrospective analysis of the 2015 National Consumer Survey on the Medication Experience and Pharmacists' Role. A total of 26,173 participants completed the survey and provided usable data. Participants using between 1 and 30 prescription medications and living more than 0 miles and up to 200 miles from their nearest pharmacy were selected for the study, resulting in a total of 15,933 participants.

    Read More

    Relationship Between Self-Efficacy and Patient Knowledge on Adherence to Oral Contraceptives Using the Morisky Medication Adherence Scale (MMAS-8)

    Reproductive Health

    2017 Preconception care, including family planning, is a vital component of healthcare for women of reproductive age. An average female spends the majority of her reproductive life trying to prevent a pregnancy. In order to prevent unintended pregnancy, women often rely on the use of hormonal contraceptives.

    Read More

  • Affiliations
    • Member - Vice Chair: Academy of Managed Care Pharmacy, 2018 - present

    • Member: California Pharmacist Association, 2014 - present

    • Member: American Pharmacist Association, 2007 - present

  • Accomplishments

    University of Minnesota Alumni Association Mentor of the Year


    Minnesota Pharmacist License

    2009 - present

    Wisconsin Pharmacist License

    2009 - present

  • Research Grants

    Evaluating the Use of Prescription Opioids Among Adolescents and Young Adults for Non-Cancer and Cancer-Related Pain

    Kay Family Foundation,

    2017 - 2019 Role: Primary Investigator

    Evaluating Gender Differences in Prescription Opioid Medication Use

    Kay Family Foundation,

    2017 - 2019 Role: Consultant

    Chapman University Office of Research Seed Funding

    Inclusion of Biosimilar Education Within Schools of Pharmacy and Medicine Curricula,

    2017 Role: Primary Investigator

  • Multimedia
    • Daniel Tomaszewski, PharmD, PhD
    • Daniel Tomaszewski, PharmD, PhD