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. Mohammed Kayali, MDMerced, CA · No drug or device payments recorded (2025) ·
(270) 871-6550 Dr. Opal Taylor, MDMerced, CA · No drug or device payments recorded (2025) ·
(209) 385-7000 Dr. Stephen Backman, D.O.Merced, CA · No drug or device payments recorded (2025) ·
(209) 385-7111 Dr. Steven Maron, M.D.Merced, CA · No drug or device payments recorded (2025) ·
(209) 385-7111 Dr. Tony Ohn, M.D.Merced, CA · No drug or device payments recorded (2025) ·
(530) 407-3919 Dr. Yorai Benzeevi, MDMerced, CA · No drug or device payments recorded (2025) ·
(209) 385-7111 Dr. Heidi Queen, M.DMill Valley, CA · $150 in drug and device payments (2025) ·
(415) 548-7901 Dr. John Elliott, MDMill Valley, CA · No drug or device payments recorded (2025) ·
(415) 384-4778 Dr. Lauren Bence, M.D.Mill Valley, CA · No drug or device payments recorded (2025) · Telehealth ·
(415) 388-2801 Dr. Toby Salz, M.D.Mill Valley, CA · No drug or device payments recorded (2025) ·
(415) 686-2361 Dr. Ward Flad, MDMill Valley, CA · No drug or device payments recorded (2025) ·
(415) 381-5575 Dr. Fredric De Picciotto, MDMillville, CA · No drug or device payments recorded (2025) ·
(530) 547-3631 Dr. Alison Stewart, D.O.Mission Hills, CA · No drug or device payments recorded (2025) ·
(818) 869-7200 Dr. Bruce Cummings, D.O.Mission Hills, CA · No drug or device payments recorded (2025) ·
(818) 365-8051 Dr. Chance Anderson, MDMission Hills, CA · No drug or device payments recorded (2025) ·
(818) 869-7200 Dr. Charles Deng, M.D.Mission Hills, CA · No drug or device payments recorded (2025) ·
(818) 365-8051 Dr. Jay Brown, M.D.Mission Hills, CA · No drug or device payments recorded (2025) ·
(818) 365-8051 Dr. Robin Klein, D.O.Mission Hills, CA · $101 in drug and device payments (2025) ·
(818) 869-7200 Dr. Sammy Shon, MDMission Hills, CA · $101 in drug and device payments (2025) ·
(818) 869-7200 Dr. Scott Wang, M.D.Mission Hills, CA · $57 in drug and device payments (2025) ·
(818) 365-8051 Dr. Thomas Waskiewicz, M.D.Mission Hills, CA · No drug or device payments recorded (2025) ·
(818) 365-8051 Dr. Andrew Lawson, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 364-1400 Dr. Christian Rank, MDMission Viejo, CA · $583 in drug and device payments (2025) ·
(949) 481-8881 Dr. Clark Paddock, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 452-7699 Dr. Daniel Firestone, MDMission Viejo, CA · $50 in drug and device payments (2025) ·
(949) 364-1400 Dr. Gregory Lampe, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 364-1400 Dr. James Keany, M.D.Mission Viejo, CA · $1,751 in drug and device payments (2025) ·
(949) 364-1400 Dr. James Price, M.D.Mission Viejo, CA · $183 in drug and device payments (2025) ·
(949) 364-1400 Dr. Jeffrey Rey, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 364-1400 Dr. Jesse Borke, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 889-2020 Dr. Jon Cline, M.D.Mission Viejo, CA · $199 in drug and device payments (2025) ·
(949) 364-1400 Dr. Joseph Dinglasan, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 365-2202 Dr. Kenneth Kwon, M.D.Mission Viejo, CA · $334 in drug and device payments (2025) ·
(949) 364-1400 Dr. Matthew Kaplan, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 364-1400 Dr. Michael Mccormack, MDMission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 582-2002 Dr. Michael Ritter, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 364-1400 Dr. Mohammad Al-sayyad, MDMission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 452-7699 Dr. Peter Czuleger, M.D.Mission Viejo, CA · $60 in drug and device payments (2025) ·
(949) 276-2111 Dr. Ramon Johnson, M.D.Mission Viejo, CA · $7,144 in drug and device payments (2025) ·
(949) 364-1400 Dr. Richard Kozak, M.D.Mission Viejo, CA · $30,600 in drug and device payments (2025) ·
(949) 309-8434 Dr. Stacy Fikert, M.D.Mission Viejo, CA · No drug or device payments recorded (2025) ·
(310) 293-5919 Dr. Zachary PerryMission Viejo, CA · No drug or device payments recorded (2025) ·
(949) 364-1400 Dr. Addison ChanModesto, CA · No drug or device payments recorded (2025) ·
(209) 526-4500 Dr. Ajay BainiwalModesto, CA · No drug or device payments recorded (2025) ·
(209) 735-5000 Dr. Alfredo Montelongo, MDModesto, CA · No drug or device payments recorded (2025) ·
(209) 526-4500 Dr. Aliasgar ChinwalaModesto, CA · No drug or device payments recorded (2025) ·
(209) 735-5000 Dr. Arman Israelyan, DOModesto, CA · No drug or device payments recorded (2025) ·
(415) 794-8284 Dr. Asit Gokli, M.D.Modesto, CA · No drug or device payments recorded (2025) ·
(209) 236-0676 Dr. Beatrice Loui Yau, M.D.Modesto, CA · No drug or device payments recorded (2025) ·
(209) 735-5000 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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