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. Andrew Adams, MDLaguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 499-1311 Dr. Janice Karelius, N.P.Laguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 499-1311 Dr. Lewis Moss, MDLaguna Beach, CA · $14 in drug and device payments (2025) ·
(949) 557-0610 Dr. Marc Taub, M.DLaguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 499-1311 Dr. Mark Paulsen, M.D.Laguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 499-3222 Dr. Mary Ashkenaze, M.D.Laguna Beach, CA · $163 in drug and device payments (2025) ·
(949) 499-1311 Dr. Michael Bower, M.D.Laguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 499-1311 Dr. Susan Munden, M.D.Laguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 499-1311 Dr. Timothy Korber, M.D.Laguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 494-5154 Dr. True Mcmahan, M.D.Laguna Beach, CA · No drug or device payments recorded (2025) ·
(949) 449-7193 Dr. William DodgeLaguna Beach, CA · No drug or device payments recorded (2025) ·
(760) 409-1165 Dr. Alexander Zlidenny, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(949) 452-3564 Dr. Dwight Arakaki, M.DLaguna Hills, CA · $40 in drug and device payments (2025) ·
(949) 452-3569 Dr. Edward Mescher, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Eric Siedenburg, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Gregory Simsarian, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Jennifer Newton, MDLaguna Hills, CA · No drug or device payments recorded (2025) ·
(949) 461-5200 Dr. Joshua Bobko, MDLaguna Hills, CA · $45 in drug and device payments (2025) ·
(202) 302-9510 Dr. Mark Reynolds, M.D.Laguna Hills, CA · $17 in drug and device payments (2025) ·
(949) 233-2454 Dr. Martin Ogle, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Michelle Tom, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Myron Wacholder, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Randall Chong, M.DLaguna Hills, CA · $308 in drug and device payments (2025) ·
(714) 837-4500 Dr. Thomas Wicks, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. William Fields, M.DLaguna Hills, CA · No drug or device payments recorded (2025) ·
(714) 837-4500 Dr. Brittany Glenn, DOLaguna Niguel, CA · $21 in drug and device payments (2025) ·
(949) 444-5803 Dr. John Chu, MDLaguna Niguel, CA · No drug or device payments recorded (2025) ·
(949) 249-9205 Dr. Laura Milker, D.O.Laguna Woods, CA · No drug or device payments recorded (2025) ·
(808) 343-3400 Dr. Aaron Schneir, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 657-7000 Dr. Agnes Letai, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 455-9100 Dr. Andrew Wayment, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Brendan McintyreLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 534-0830 Dr. Brian Chin, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Brian Snyder, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 657-7000 Dr. Christian IuteriLa Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Christopher Saucedo, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 554-8638 Dr. Christopher Wiesner, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 626-6150 Dr. Cynthia Purviance, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 249-6800 Dr. David Guss, MDLa Jolla, CA · $48 in drug and device payments (2025) ·
(858) 657-7000 Dr. David Smith, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 626-6150 Dr. Elaine Sapiro, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 657-7000 Dr. Elizabeth Mangin, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Erick Torres, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Frederick Spiegler, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 626-6150 Dr. George Baehr, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 554-8638 Dr. George Shumaik, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(858) 657-7000 Dr. Gerald Tolbert, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Gregory Lepkowski, MDLa Jolla, CA · No drug or device payments recorded (2025) ·
(800) 926-8273 Dr. Heather Villani, M.D.La Jolla, CA · No drug or device payments recorded (2025) ·
(858) 228-6364 Dr. Hung Huynh, M.D.La Jolla, CA · $28 in drug and device payments (2025) ·
(858) 554-8638 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
Emergency Medicine in all 50 states Search all 7,777 in the directory Ask Zach for help choosing
Related
