HealthcareDiscovery.AI / Doctors / California / Simi Valley / Emergency Medicine

Emergency Medicine in Simi Valley, California

Data updated monthly · Last refresh September 2026

12 Emergency Medicine providers practice in Simi Valley. Listings are drawn from federal public records and are not endorsements.

Emergency Medicine providers in Simi Valley

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Afomia Mesfin, MD
Simi Valley, CA · No drug or device payments recorded (2025) · (877) 346-2211
Dr. Alfred Yu, M.D.
Simi Valley, CA · $131 in drug and device payments (2025) · (805) 955-6000
Dr. Andrew Bourgeois, M.D.
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 955-6100
Dr. Anthony Ho, D.O.
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 988-6100
Dr. Daniel Mcginn, DO
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 907-8256
Dr. Joyce Norman, M.D.
Simi Valley, CA · $42 in drug and device payments (2025) · (805) 955-6000
Dr. Kelsey Schrage, DO
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 955-6000
Dr. Laura Leistiko, M.D.
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 955-6000
Dr. Marc Mendes, M.D.
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 955-6101
Dr. Nancy Sun, M.D.
Simi Valley, CA · $148 in drug and device payments (2025) · (805) 955-6107
Dr. Siobhan Newman, MD
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 579-3981
Dr. Virginia Valadka, M.D.
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 955-6000

Common questions

How many Emergency Medicine providers are in Simi Valley, California?

There are 12 Emergency Medicine providers with active NPI records practicing in Simi Valley, according to federal NPPES data refreshed monthly.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in Simi Valley Emergency Medicine across California

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.