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Office
5777 E. Mayo Boulevard
Phoenix, AZ 85050
Education & Training
Loyola University Medical CenterFellowship, Infectious Disease, 1993 - 1995
Ascension Illinois/Saint FrancisResidency, Internal Medicine, 1990 - 1993
University of the Philippines College of MedicineClass of 1989
Certifications & Licensure
AZ State Medical License 2006 - 2026
LA State Medical License 2003 - 2018
IL State Medical License 1992 - 2011- American Board of Internal Medicine Infectious Disease
Publications & Presentations
PubMed
- 4 citationsComparison of Oral and Intravenous Definitive Antibiotic Therapy for Beta-Hemolytic Streptococcus Species Bloodstream Infections from Soft Tissue Sources: a Propensity...Zachary A Yetmar, Supavit Chesdachai, Brian D Lahr, Douglas W Challener, Kellie N Arensman Hannan
Antimicrobial Agents and Chemotherapy. 2023-06-15 - 49 citationsMonoclonal Antibody Therapy for COVID-19 in Solid Organ Transplant Recipients.Zachary A Yetmar, Elena Beam, John C. O’Horo, Ravindra Ganesh, Dennis M. Bierle
Open Forum Infectious Diseases. 2021-06-01 - 19 citationsEffectiveness of Monoclonal Antibodies in Preventing Severe COVID-19 With Emergence of the Delta Variant.John C O'Horo, Douglas W Challener, Leigh Speicher, Wendelyn Bosch, Maria Teresa Seville
Mayo Clinic Proceedings. 2022-02-01
Professional Memberships
- Fellow
- Society for Healthcare Epidemiology of AmericaFellow
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