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. Diane Han, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(408) 981-2115 Dr. Donald Barr, M.D., PH.D., M.S.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-2884 Dr. Donald Schreiber, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-6576 Dr. Eric Weiss, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-6576 Dr. Erin Liang, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-5111 Dr. Erin Ruiz, MDPalo Alto, CA · $15 in drug and device payments (2025) ·
(650) 723-9215 Dr. Gregory Gilbert, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-7337 Dr. James Quinn, MDPalo Alto, CA · $40,609 in drug and device payments (2025) ·
(650) 853-2958 Dr. Jennifer Bauer, NPPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2958 Dr. Jennifer Somsouk, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Jessica Bruynell, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(636) 221-4585 Dr. Jose Acosta, MDPalo Alto, CA · $1,415 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Kaitlin Machina, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-5111 Dr. Kathryn Wiesendanger YalePalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-9215 Dr. Laura Eaton, MDPalo Alto, CA · $24 in drug and device payments (2025) ·
(650) 321-4121 Dr. Lawrence Hsu, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(415) 952-6869 Dr. Leigh Durlacher, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2958 Dr. Marcus Sinewe, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Marian DavidsonPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-4121 Dr. Megan Storm, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(601) 310-5011 Dr. Melinda Sharon, MD, MPHPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 724-4750 Dr. Meng Qiao XiPalo Alto, CA · No drug or device payments recorded (2025) ·
(840) 201-0239 Dr. Michael Fargusson, M.DPalo Alto, CA · No drug or device payments recorded (2025) ·
(888) 731-8994 Dr. Midori Aogaichi, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 321-2842 Dr. Nicholas Hall, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-6576 Dr. Paige Milliken, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-9215 Dr. Peter Davis-allen, MDPalo Alto, CA · $35 in drug and device payments (2025) ·
(650) 723-6576 Dr. Pravene Nath, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 721-6408 Dr. Richard Deslauriers, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 853-2958 Dr. Robert Norris, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 725-9445 Dr. Sabrina Pak, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Samantha Izuno, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-6576 Dr. Sammy Mehtar, MD, MSPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-6576 Dr. Scott Wu, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-5111 Dr. Summer Ghaith, MD, JDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-5111 Dr. Susan Spangler, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 322-5717 Dr. Terence Ahern, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Timothy Peck, M.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(617) 317-8913 Dr. Tonia Fox, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 493-5000 Dr. Victor SadauskasPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 724-0853 Dr. William Johnston, M.D.Palo Alto, CA · $43 in drug and device payments (2025) ·
(650) 493-5000 Dr. Yanika Wolfe, MDPalo Alto, CA · $222 in drug and device payments (2025) ·
(610) 406-7176 Dr. Zina Semenovskaya, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(718) 836-6600 Dr. Daniel Chavira, MDPalos Verdes Estates, CA · No drug or device payments recorded (2025) ·
(310) 869-6840 Dr. Seema Doshi, M.D.Palos Verdes Estates, CA · No drug or device payments recorded (2025) ·
(310) 897-1711 Dr. Alexander Thayer, MDPanorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2000 Dr. Amanda Garner, M.D.Panorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2013 Dr. Arthur Youssefian, MDPanorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2000 Dr. Arturo Salgado, MDPanorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2000 Dr. Ashish Sehgal, MDPanorama City, CA · No drug or device payments recorded (2025) ·
(818) 375-2000 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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