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Dr. Jonathan H. Watanabe

Post-Acute Care Outcomes, Adherence Research. Health Disparities Research

Jonathan H. Watanabe

Jonathan H. Watanabe, Pharm.D., M.S., Ph.D. BCGP

Associate Professor of Clinical Pharmacy
Skaggs School of Pharmacy and Pharmaceutical Sciences


(858) 822-1069

Research Summary: Post-Acute Care Outcomes, Adherence Research. Health Disparities Research

Dr. Watanabe seeks isolate the explanatory factors that jeopardize appropriate medication consumption. Dr. Watanabe practices in Post-Acute Care Pharmacy and focuses on outcomes in residents of extended care facilities. He has completed investigations to 1) evaluate the influence of adherence on surrogate markers for cardiovascular disease; 2) explore the effect of copayment and copayment pricing on adherence; 3) measure the influence of polypharmacy on adherence; 4) measure the influence of pharmacy benefit on health services utilization; 5) contrast methods used in health services investigations applying large national databases; 6) propose new thresholds for categorizing adherent status.

Collaborating with an interdisciplinary care team, Professor Watanabe has helped to initiate longitudinal assessments of outcomes in a variety of Post-Acute Care Settings and to characterize patients at risk for poor adherence and compromised health outcomes in Veterans populations with chronic diseases. He has served as an invited speaker at several international forums devoted to improving care for seniors in long term care settings. He currently trains students, post-docs, and practitioners in multiple disciplines in clinical research and post-acute care.

Professor Watanabe is a clinical consultant at the San Diego Program of All-inclusive Care for the Elderly (PACE) Clinic in San Ysidro, CA and the Villa Pomerado Skilled Nursing Facility in Poway, CA . He is an investigator on the Health Resources and Services Administration funded San Diego Geriatrics Workforce Enhancement Program Grant. Dr. Watanabe was the inaugural recipient of the University of Washington/Allergan Health Economics and Outcomes Research Fellowship. He is a Board Certified Geriatric Pharmacist (BCGP).

Academic Achievements


B.S. in Zoology (University of Washington); Pharm.D. (University of Southern California); M.S. (University of Washington); Ph.D. (University of Washington).

Awards and Honors:

National Academy of Medicine Pharmacy Fellow (2016-2018). National Institutes of Health Loan Repayment Program Investigator. Platinum Award for top abstracts Academy of Managed Care Pharmacy Nexus Conference (2014). UC San Diego and You 2016 


  • Biostatistics (SPPS 206)
  • Clinical Research Design and Applications (SPPS 208)

Key Contributions to Pharmaceutical Sciences

  • Enhanced understanding of adherence on clinically validated outcome measures in chronic diseases.
  • Proposed alternative adherence threshold based on robust outcomes assessment.
  • Quantified role in appropriate medication use and emergency department visits.
  • Applied outcomes research framework to Long Term Care Pharmacy practice
  • Quantified association between medication use and falls in older adults.

Selected Recent Publications (view more)