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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. Brian Asalone, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Christine Bloom, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. David Anthony, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. David Isagholian, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Grace Bullock, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 521-8824
Dr. Jerrica Chen, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2013
Dr. John Wall, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Joseph Beezy, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Joseph Brownfield, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Kai Schlingmann, D.O.
Panorama City, CA · No drug or device payments recorded (2025) · (818) 314-2900
Dr. Karen Tan, M.D.
Panorama City, CA · $81 in drug and device payments (2025) · (818) 375-2013
Dr. Kenneth Robinson, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Molly Jancis, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Noosha Amiri-davani, M.D.
Panorama City, CA · No drug or device payments recorded (2025) · (818) 904-3500
Dr. Richard Lau, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Roxana Yoonessi-martin, M.D.
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2013
Dr. Seth Kutik, M.D.
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Tara Fusco, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 815-5193
Dr. Thomas Magner, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Thomas Wu, M.D.
Panorama City, CA · $21 in drug and device payments (2025) · (877) 608-0044
Dr. Timothy Chang, M.D.
Panorama City, CA · $24 in drug and device payments (2025) · (818) 375-4231
Dr. William Jou, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Yumi Ishihara, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Yvette Owens, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Christina Maria Umber, M.D.
Paradise, CA · No drug or device payments recorded (2025) · (530) 877-9361
Dr. Hyonah Shin, M.D.
Paradise, CA · No drug or device payments recorded (2025) · (530) 877-9361
Dr. Michael Lockwood, MD
Paradise, CA · No drug or device payments recorded (2025) · (530) 877-9361
Dr. Eugene Allen, D.O.
Paramount, CA · $22 in drug and device payments (2025) · (562) 808-2243
Dr. Anna Trtchounian, MD
Pasadena, CA · No drug or device payments recorded (2025) · (855) 522-7898
Dr. Asbasia Mikhail, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-3445
Dr. Betty Ahn, MD
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-3445
Dr. Bradley Gerberich, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (818) 585-9562
Dr. Brandon Lew, D.O.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-3445
Dr. Brandon Libby, MD
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-5000
Dr. Charles Bugg, M.D., PH.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-5116
Dr. Charles Otieno, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 486-2674
Dr. Christopher Cha
Pasadena, CA · No drug or device payments recorded (2025) · (888) 505-0043
Dr. Claudia Trilles
Pasadena, CA · No drug or device payments recorded (2025) · (888) 388-7184
Dr. David Ulick, MD
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-5106
Dr. Denis Yen, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-3445
Dr. Derrick Myers, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 291-2525
Dr. Douglas Willard, M.D,
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-3445
Dr. Edwin Peck, MD
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-5111
Dr. Giancarlo Dimassa, MD
Pasadena, CA · No drug or device payments recorded (2025) · Telehealth · (310) 753-0885
Dr. Huma Khan, MD
Pasadena, CA · No drug or device payments recorded (2025) · (714) 272-1055
Dr. Igor Mashchenko, MD
Pasadena, CA · No drug or device payments recorded (2025) · (855) 522-7898
Dr. James Luna, MD
Pasadena, CA · No drug or device payments recorded (2025) · (626) 397-6445
Dr. Joanna Maack, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (917) 929-7870
Dr. John Bosco, MD
Pasadena, CA · No drug or device payments recorded (2025) · (855) 522-7898
Dr. Jorge Fernandez, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 405-7966

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.