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Office
27700 Medical Center Rd
Mission Viejo, CA 92691Phone+1 949-364-1400Fax+1 949-365-4941
Education & Training
UCLA David Geffen School of Medicine/UCLA Medical Center/Olive ViewResidency, Emergency Medicine, 1982 - 1985- UCLA David Geffen School of Medicine/UCLA Medical CenterResidency, Pediatrics, 1979 - 1982
Uconn School Of MedicineClass of 1979
Certifications & Licensure
CA State Medical License 1980 - 2026- American Board of Emergency Medicine Emergency Medicine
- American Board of Pediatrics Pediatrics
Awards, Honors, & Recognition
- Fellow (FACEP) American College of Emergency Physicians
- Fellow (FAAP) American Academy of Pediatrics
Publications & Presentations
PubMed
- 18 citationsThe role of the emergency physician in emergency medical services for childrenMarianne Gausche-Hill, Ramon W. Johnson, Craig H Warden, John A. Brennan
Annals of Emergency Medicine. 2003-08-01 - 2 citationsEmergency medicine practice environment and impact on concert examination performance.Catherine A. Marco, Robert P. Wahl, James D. Thomas, Ramon W. Johnson, O. John Ma
The American Journal of Emergency Medicine. 2019-05-01
Press Mentions
Emergency Docs Share Their Experiences Recovering from COVID-19April 23rd, 2021
ACEP Recognizes Excellence in Emergency MedicineNovember 4th, 2019
Substance Use, Homelessness, Mental Illness and Medicaid Coverage: A Set-up for High Emergency Department UtilizationOctober 18th, 2019- Join now to see all
Professional Memberships
- Fellow
- Fellow
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