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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. Thomas Keown, MD
Vacaville, CA · No drug or device payments recorded (2025) · (707) 624-2600
Dr. William Peterson, M.D.
Vacaville, CA · $20 in drug and device payments (2025) · (707) 446-4000
Dr. Charles Schultz, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. Christopher Scott, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. Clay Cormier, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. David Henry, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. David Schmidt, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. Jason Ziemba, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. John Meher, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 200-1601
Dr. Maya Kido, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 200-1601
Dr. Okemefuna Okpara, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (213) 228-3538
Dr. Oliver Sahagun, M.D.
Valencia, CA · $134 in drug and device payments (2025) · (661) 253-8112
Dr. Roberto Zappacosta, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. Roger Wallace, M.D.
Valencia, CA · No drug or device payments recorded (2025) · (661) 253-8112
Dr. Alana Kinrich, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Allen Morini, D.O.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 554-4444
Dr. Alvaro Hidalgo, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Andy Celestia, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Antony Mathew, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (925) 225-5837
Dr. Balraj Dhillon, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 554-4444
Dr. Brett Nelson, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Christiane Eisele, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Christopher Wallace, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 554-4444
Dr. Dana Schwarz, M.D.,PH.D
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1030
Dr. Danielle Fisher, PA-C
Vallejo, CA · $46 in drug and device payments (2025) · (707) 554-4444
Dr. Daniel Pine, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. David Baldini, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Frederick Bialy, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Gordon Chew, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Hannah St. Francis, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-5504
Dr. Ian Ahwah, M.D.
Vallejo, CA · $22 in drug and device payments (2025) · Telehealth · (707) 554-4444
Dr. Ian Chuang, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 554-4444
Dr. Jacqueline Vo, DO
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. James Pearson, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Jason Bateman, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Jason Nau, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Jason Willis-shore, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Jeid Merritt, MD
Vallejo, CA · $37 in drug and device payments (2025) · (718) 240-6347
Dr. Joel Kahn, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 554-5210
Dr. John Anicetti, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Jonathan Cheng
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Judith Peck, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-3373
Dr. Kenneth Berniker, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Kenneth Sanders, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Lillian Pan, D.O.
Vallejo, CA · No drug or device payments recorded (2025) · (707) 554-5210
Dr. Lisa Chan, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Lori Maggioncalda, DO
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Marcia Lenard, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000
Dr. Mark Schwartz, MD
Vallejo, CA · $16 in drug and device payments (2025) · (707) 641-1900
Dr. Merrill Swiney, MD
Vallejo, CA · No drug or device payments recorded (2025) · (707) 651-1000

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.