Herman Johannesmeyer
Biography
Herman Johannesmeyer, Pharm.D., BCPS, is Health Sciences Associate Clinical Professor at the University of California, Irvine School of Pharmacy and Pharmaceutical Sciences. He completed a combined PGY-1 and PGY-2 Pharmacotherapy Residency at Texas Tech University Health Sciences Center and received his Doctor of Pharmacy from the University of Arizona College of Pharmacy. His clinical and scholarly work centers on internal medicine and pharmacotherapy, with particular focus on infectious disease, glycemic management, and cardiology.
Johannesmeyer has contributed to the peer-reviewed literature across a range of clinical and pharmacy education topics and is a contributing author to the Lower Respiratory Tract Infections chapter in DiPiro's Pharmacotherapy: A Pathophysiologic Approach, 13th Edition. He serves as Chair of the University of California Preceptor Developmental Collaborative and as a Director at Large for the Orange County Society of Health-System Pharmacists (OCSHP), where he also served as President from 2019 to 2022. He previously held the position of Assistant Professor of Pharmacy Practice at Marshall B. Ketchum University College of Pharmacy, where he also served as a Pharmacy Faculty-in-Residence at Mission Hospital.
Johannesmeyer has been recognized as the UCI School of Pharmacy and Pharmaceutical Sciences Faculty Preceptor of the Year (2025) and received the OCSHP Pharmacist of the Year award in 2022. He has presented his research at national and state meetings, including the American College of Clinical Pharmacists and the American Association of Colleges of Pharmacy, and regularly delivers continuing education to pharmacists through the California Society of Health-System Pharmacists and OCSHP.
Return to topEducation
- Pharm.D., The University of Arizona College of Pharmacy, 2015
- PGY-1/PGY-2 Pharmacotherapy Residency, Texas Tech University Health Sciences Center – Lubbock, 2017
Distinctions
- UCI SPPS Faculty Preceptor of the Year, 2025
- UCI Celebration of Teaching SPPS Dean's Honoree, 2025
- Orange County Society of Health-System Pharmacists (OCSHP) Pharmacist of the Year, 2022
- ACCP Adult Medicine PRN Virtual Poster Symposium Best Case Report, 2024
- ACCP Adult Medicine PRN Virtual Poster Symposium Top Case Report, 2023
- MBKU COP Faculty Preceptor of the Year, 2020
Areas of Expertise
- Clinical Pharmacotherapy and Pharmacy Practice
- Anticoagulation and Thrombosis Management
- Infectious Disease Antimicrobial Therapy
- Preceptor Development and Pharmacy Education
- Corticosteroid Glycemic Outcomes in COPD
- Novel Antibiotic Clinical Effectiveness
- Medication Safety and Adverse Drug Events
Recent Publications
- Hoang K, Barrera T, Watanabe M, Johannesmeyer HJ, “A Case Report of Valacyclovir-Associated Neurotoxicity” (opens in new tab), Microorganisms, vol. 14, no. 4, pp. 755, 2026.
- Johannesmeyer HJ, Salman G, Khieu T, “Medication-Related Safety Events” (opens in new tab), Joint Commission Journal on Quality and Patient Safety, vol. 52, no. 2, pp. 105, 2026.
- Van M, Lee HS, Johannesmeyer HJ, “Novel Antibiotics: Niches, Efficacies, and Clinical Pearls” (opens in new tab), Journal of Infusion Nursing, vol. 48, no. 5, pp. 338-343, 2025.
- Johannesmeyer HJ, “Getting to the Bottom of a Patient's Penicillin Allergy Label” (opens in new tab), Journal of Infusion Nursing, vol. 48, no. 1, pp. 32-35, 2025.
- Johannesmeyer HJ, Baloyan L, Kolyouthapong K, “A Retrospective Analysis of the Clinical Effectiveness of Tigecycline in the Treatment of Clostridioides difficile-Associated Diarrhea” (opens in new tab), Pharmacoepidemiology, vol. 3, no. 2, pp. 231-240, 2024.
- Salman G, Johannesmeyer HJ, Breen MJ, “Key considerations in navigating ticagrelor's reported effect on heparin-induced thrombocytopenia functional assays in a landscape of limited data” (opens in new tab), American Journal of Health System Pharmacy, vol. 81, pp. 488-493, 2024.
- Johannesmeyer H, Tran C, “Antibiotic Associated Liver Injury and Cholelithiasis: A Case Report”, J Am Coll Clin Pharm, vol. 7, no. 7, pp. 730, 2024. Presented at American College of Clinical Pharmacy Virtual Poster Symposium, May 2024.
- Lee Nguyen, Herman Johannesmeyer, Evan Zasowski, “Lower Respiratory Tract Infections, Chapter 134”, DiPiro's Pharmacotherapy: A Pathophysiologic Approach, 13th Edition, 2024.
- Johannesmeyer HJ, Cheon J, Cox CD, “Effect of an Educational Video Miniseries on Interprofessional Preceptor Development” (opens in new tab), American Journal of Pharmaceutical Education, vol. 87, no. 11, pp. 100128, 2023.
- Salman G, Johannesmeyer H, Breen M, “Practical Considerations in Navigating Ticagrelor's Interference with Functional Heparin-Induced Thrombocytopenia (HIT) Assays: A Case Report”, J Am Coll Clin Pharm, vol. 6, no. 7, pp. 829, 2023. Presented at American College of Clinical Pharmacy Virtual Poster Symposium, May 2023.
- Johannesmeyer HJ, Moussavi K, Rambaran KA, Kolyouthapong K, “Corticosteroid administration and glycemic outcomes during treatment of acute exacerbation of chronic obstructive pulmonary disease” (opens in new tab), American Journal of Medicine Open, vol. 8, pp. 100027, 2022.
- Johannesmeyer HJ, Moussavi K, “Defining the Outcome of Hyperglycemia” (opens in new tab), Chest, vol. 161, no. 4, pp. e251-e252, 2022.
- Johannesmeyer HJ, Dau NQ, “Student Pharmacist Perceptions of Male Faculty Teaching Female-Specific Sex and Gender Health Topics” (opens in new tab), American Journal of Pharmaceutical Education, vol. 85, pp. 8383, 2021.
- Chen JJ, Johannesmeyer HJ, “Gagné's 9 Events of Instruction With Active Learning: Teaching Student Pharmacists How to Measure Blood Pressure” (opens in new tab), Journal of Pharmacy Practice, vol. 34, no. 3, pp. 407-416, 2021.
- Johannesmeyer HJ, Seifert CF, “A retrospective analysis of clinical acuity markers on hospital length of stay in patients with febrile neutropenia” (opens in new tab), Journal of Oncology Pharmacy Practice, vol. 25, no. 3, pp. 535-543, 2019.
- Johannesmeyer HJ, Bhakta S, Morales F, “Linezolid-Associated Hypoglycemia”, Drug safety - case reports, vol. 4, no. 1, pp. 18, 2017.
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Last updated on 9/11/2026.