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 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. Paulina Mendoza-mancini, DOPlacentia, CA · No drug or device payments recorded (2025) ·
(714) 524-4827 Dr. Thao Do, D.O.Placentia, CA · No drug or device payments recorded (2025) ·
(714) 993-2000 Dr. Alexis Long, MDPlacerville, CA · No drug or device payments recorded (2025) · Telehealth ·
(530) 626-3682 Dr. Allison Harvey, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(530) 622-1441 Dr. David Hellerstein, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(530) 642-8952 Dr. Grant Gwinup, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(530) 344-5496 Dr. John Schlund, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(330) 493-4443 Dr. John Tucker, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(330) 493-4443 Dr. Michael Dorso, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(330) 493-4443 Dr. Michael Ward, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(530) 622-1441 Dr. Richard Dunning, MDPlacerville, CA · No drug or device payments recorded (2025) ·
(330) 493-4443 Dr. Rochelle Jagdeo, M.D.Placerville, CA · No drug or device payments recorded (2025) ·
(530) 622-1441 Dr. Rubeal Mann, M.D.Placerville, CA · No drug or device payments recorded (2025) ·
(530) 622-1441 Dr. Shane Torgerson, M.D.Placerville, CA · No drug or device payments recorded (2025) ·
(530) 622-1441 Dr. Vyas BallalPlacerville, CA · No drug or device payments recorded (2025) ·
(330) 493-4443 Dr. Alan Ly, DOPleasanton, CA · No drug or device payments recorded (2025) ·
(415) 990-3017 Dr. Andreas Tjoe, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 416-6585 Dr. Candice Mcneil, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(800) 617-7717 Dr. Christopher Severson, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Colleen Johnson, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Cynthia Penn-duecker, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Dennis Alfaro, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Douglas Yoshida, MDPleasanton, CA · $225 in drug and device payments (2025) ·
(209) 342-2300 Dr. Dyke Edwards, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-5000 Dr. Edward Kan, MDPleasanton, CA · $225 in drug and device payments (2025) ·
(209) 342-2300 Dr. Gerald Nazareno, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Helen Tam, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Herschel Fischer, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 846-6685 Dr. Howard Yoshioka, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. James Burgess, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-5000 Dr. Jeremy EstradaPleasanton, CA · $255 in drug and device payments (2025) ·
(925) 416-6585 Dr. Letitia Li, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(844) 301-0805 Dr. Michael Costello, MDPleasanton, CA · $55,090 in drug and device payments (2025) ·
(209) 342-2300 Dr. Nicholas Prewitt, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(844) 301-0805 Dr. Paul Chasin, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Richard Carvolth, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 924-1600 Dr. Robert Kwak, M.D.Pleasanton, CA · No drug or device payments recorded (2025) ·
(650) 799-6666 Dr. Robert MandibergPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Scott Seidman, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Stephanie Nguyen, DOPleasanton, CA · No drug or device payments recorded (2025) ·
(925) 847-3000 Dr. Tony Shiu, MDPleasanton, CA · No drug or device payments recorded (2025) ·
(209) 342-2300 Dr. Yen-hua Yu, D.O.Pleasanton, CA · No drug or device payments recorded (2025) ·
(925) 416-6585 Dr. Amy Douglas, M.D.Pomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9500 Dr. Arjun Bakshi, DOPomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9500 Dr. Bradford Hardesty, M.D.Pomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9500 Dr. Christopher Pann, DOPomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9500 Dr. Christopher Steckling, M.D.Pomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9600 Dr. Donald Barceloux, M.D.Pomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9600 Dr. Geoffrey Pableo, M.D.Pomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9623 Dr. Gregory Burke, M.DPomona, CA · No drug or device payments recorded (2025) ·
(909) 865-9600 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.
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