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Emergency Medicine Doctors in California

Data updated monthly · Last refresh October 2026

7,777 Emergency Medicine providers practice in California, including 234 (3%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

7,777providers
234telehealth
Los Angelestop city

Emergency Medicine by city in California

Choose a city to see providers there.

Emergency Medicine in Los Angeles630 providers
Emergency Medicine in San Diego496 providers
Emergency Medicine in Sacramento371 providers
Emergency Medicine in San Francisco291 providers
Emergency Medicine in Oakland251 providers
Emergency Medicine in Fresno229 providers
Emergency Medicine in Torrance196 providers
Emergency Medicine in Orange179 providers
Emergency Medicine in Loma Linda169 providers
Emergency Medicine in Stanford164 providers
Emergency Medicine in Bakersfield117 providers
Emergency Medicine in San Jose114 providers
Emergency Medicine in Colton109 providers
Emergency Medicine in Riverside104 providers
Emergency Medicine in Walnut Creek97 providers
Emergency Medicine in Rancho Mirage76 providers
Emergency Medicine in Visalia73 providers
Emergency Medicine in Long Beach69 providers
Emergency Medicine in Modesto68 providers
Emergency Medicine in Santa Rosa64 providers
Emergency Medicine in Palm Springs63 providers
Emergency Medicine in San Leandro59 providers
Emergency Medicine in La Jolla59 providers
Emergency Medicine in Anaheim58 providers

Emergency Medicine providers in California

Listed by city, largest first. 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. Ronald Goubert
Orange, CA · $188 in drug and device payments (2025) · (714) 456-8116
Dr. Ronald Rivera, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 509-7664
Dr. Rory Schwan, M.D.
Orange, CA · $115 in drug and device payments (2025) · (714) 456-5239
Dr. Roy Almog
Orange, CA · $188 in drug and device payments (2025) · (714) 456-5239
Dr. Ryan Gibney, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Samer Assaf, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5705
Dr. Samuel J Stratton, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Savannah Tan, STUDENT
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8116
Dr. Scott Pierce, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Scott Rudkin, MD
Orange, CA · $207 in drug and device payments (2025) · (714) 456-2986
Dr. Shadi Lahham, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5705
Dr. Shaheena Patierno, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Shahram Lotfipour, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Sonia Simms, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9111
Dr. Sophia Spann
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Stephen Gassner, MD, MPH
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Tae Eung Kim, M.D.
Orange, CA · No drug or device payments recorded (2025) · (800) 465-3203
Dr. Tara Zand, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Tien Lu
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Toby Myatt, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Troy Mccarty, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Tucker Brady, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Tyler Ayalin, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 543-8911
Dr. Tyler Reynard, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7004
Dr. Tyler Rigdon, MD
Orange, CA · $34 in drug and device payments (2025) · (714) 456-5239
Dr. Victor Cisneros, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5239
Dr. Victoria Oppenheim, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Vikram Muller, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Walter Valesky, MD
Orange, CA · $29 in drug and device payments (2025) · (714) 456-8888
Dr. Weston Seipp
Orange, CA · No drug or device payments recorded (2025) · (443) 299-9109
Dr. William Murphy, MD
Orange, CA · $34 in drug and device payments (2025) · (714) 633-9111
Dr. Wirachin Hoonpongsimanont, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5705
Dr. Zareth Irwin, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8068
Dr. Jonathan Smart
Orange,, CA · No drug or device payments recorded (2025) · (318) 805-4231
Dr. Cynthia Cellucci-chwalik, MD
Oroville, CA · $103 in drug and device payments (2025) · (530) 533-8500
Dr. David Hall, MD
Oroville, CA · No drug or device payments recorded (2025) · (530) 532-8584
Dr. Massud Atta, MD
Oroville, CA · No drug or device payments recorded (2025) · (530) 533-8500
Dr. Matthew Macdonald, MD
Oroville, CA · No drug or device payments recorded (2025) · (530) 533-8500
Dr. Oday Naser, M.D.
Oroville, CA · No drug or device payments recorded (2025) · (530) 533-8500
Dr. Peter Russo, MD
Oroville, CA · No drug or device payments recorded (2025) · (530) 534-4530
Dr. Priss Harman, MD
Oroville, CA · No drug or device payments recorded (2025) · (530) 532-8584
Dr. Sief Naser, M.D.
Oroville, CA · No drug or device payments recorded (2025) · (530) 533-8500
Dr. Adrian Danescu, MEDICAL DOCTOR
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-2674
Dr. Chi Truong, D.O.
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-2843
Dr. Christine Chang, MD
Oxnard, CA · $167 in drug and device payments (2025) · (805) 988-2663
Dr. Daniel Orosco, D.O.
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-2500
Dr. Heather Huffman-dracht, MD
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-2500
Dr. Henry Hooper, M.D.
Oxnard, CA · $19 in drug and device payments (2025) · (805) 988-2674
Dr. John Buckner, M.D.
Oxnard, CA · No drug or device payments recorded (2025) · (805) 988-2500
Dr. Kevin Hua, D.O.
Oxnard, CA · $140 in drug and device payments (2025) · (805) 988-2663

Common questions

How many Emergency Medicine providers are in California?

There are 7,777 Emergency Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Emergency Medicine providers in California offer telehealth?

Yes. 234 of the 7,777 Emergency Medicine providers in California (about 3%) report offering telehealth services in CMS data.

Which cities in California have the most Emergency Medicine providers?

Los Angeles (630), San Diego (496), Sacramento (371) have the highest concentration of Emergency Medicine providers in California.

How many Emergency Medicine providers in California received drug or device company payments?

1,103 of 7,777 Emergency Medicine providers in California (14%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

Where does this data come from?

Provider counts and profiles 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.

Do most Emergency Medicine Doctors in California work in independent practices or large health systems?

Among 4,164 Emergency Medicine Doctors in California enrolled in Medicare, 7% bill through a solo or small practice with fewer than 10 clinicians, 27% through a mid-size group of 10 to 99, and 66% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Emergency Medicine Doctors in California work at?

According to CMS facility affiliation records, the California hospitals where the most Emergency Medicine Doctors hold privileges are Uci Health-Orange in Orange; Stanford Health Care in Stanford; Kaiser Foundation Hospital - Oakland/Richmond in Oakland.

Related reading on HealthcareDiscovery.AI

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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. Are you a Emergency Medicine in California? Get featured.