HealthcareDiscovery.AI / Doctors / California / Surgery

General Surgeons in California

Data updated monthly · Last refresh October 2026

3,111 Surgery providers practice in California, including 468 (15%) 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.

3,111providers
468telehealth
Los Angelestop city

Surgery by city in California

Choose a city to see providers there.

Surgery in Los Angeles260 providers
Surgery in San Francisco205 providers
Surgery in San Diego158 providers
Surgery in Sacramento106 providers
Surgery in Fresno67 providers
Surgery in Palo Alto64 providers
Surgery in Oakland60 providers
Surgery in Orange59 providers
Surgery in Riverside53 providers
Surgery in Loma Linda52 providers
Surgery in San Jose50 providers
Surgery in Torrance49 providers
Surgery in Stanford46 providers
Surgery in La Jolla43 providers
Surgery in Bakersfield40 providers
Surgery in Modesto35 providers
Surgery in Santa Monica35 providers
Surgery in Roseville35 providers
Surgery in Walnut Creek33 providers
Surgery in Newport Beach32 providers
Surgery in Beverly Hills31 providers
Surgery in Anaheim30 providers
Surgery in Pasadena27 providers
Surgery in West Hollywood24 providers

Surgery 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. Yinan Wei, M.D.
San Jose, CA · $2,983 in drug and device payments (2025) · (650) 282-3000
Dr. Jeff Angarola, DPM
San Juan Capistrano, CA · $50 in drug and device payments (2025) · Telehealth · (949) 661-9600
Dr. Brian Walker, MD
San Leandro, CA · No drug or device payments recorded (2025) · (510) 352-8400
Dr. Chuc Dang, M.D.
San Leandro, CA · $159 in drug and device payments (2025) · (510) 317-9990
Dr. Donato Stinghen, MD
San Leandro, CA · $672 in drug and device payments (2025) · (510) 347-4700
Dr. Faye Yu, M.D.
San Leandro, CA · $895 in drug and device payments (2025) · (510) 454-7100
Dr. Garfield Bryant, M.D.
San Leandro, CA · No drug or device payments recorded (2025) · (510) 357-5566
Dr. James Bryant, MD
San Leandro, CA · No drug or device payments recorded (2025) · (510) 357-5566
Dr. Jhoanne Bautista, M.D. PH.D.
San Leandro, CA · No drug or device payments recorded (2025) · Telehealth · (510) 298-2146
Dr. Louis Ivey, M.D.
San Leandro, CA · $300 in drug and device payments (2025) · (510) 454-1000
Dr. Michael Peterson, M.D.
San Leandro, CA · $50 in drug and device payments (2025) · (510) 454-1000
Dr. Rene Ramirez, M.D.
San Leandro, CA · No drug or device payments recorded (2025) · (510) 454-1000
Dr. Sara Reinganum, MD
San Leandro, CA · $727 in drug and device payments (2025) · Telehealth · (510) 357-7141
Dr. Todd Olsen, MD
San Leandro, CA · $124 in drug and device payments (2025) · (510) 784-4000
Dr. David Bonnheim, M.D.
San Luis Obispo, CA · No drug or device payments recorded (2025) · (805) 544-1811
Dr. Nancyann Guthrie, MD
San Luis Obispo, CA · No drug or device payments recorded (2025) · (805) 783-7044
Dr. Stephen Tidik, M.D.
San Luis Obispo, CA · No drug or device payments recorded (2025) · (805) 544-8993
Dr. Camellia Racu-keefer, MD
San Marcos, CA · No drug or device payments recorded (2025) · (619) 662-1222
Dr. Matthew Kozloff, M.D.
San Marcos, CA · $2,787 in drug and device payments (2025) · (760) 489-5955
Dr. Nhien Nguyen, MD
San Marcos, CA · No drug or device payments recorded (2025) · (619) 662-1222
Dr. David Jegge
San Mateo, CA · No drug or device payments recorded (2025) · (650) 342-9491
Dr. Lowell Wetter, M.D.
San Mateo, CA · $25 in drug and device payments (2025) · (650) 343-5400
Dr. Tobin Schneider, MD
San Mateo, CA · No drug or device payments recorded (2025) · (650) 342-1414
Dr. Gerard Menut, M.D.
San Pablo, CA · No drug or device payments recorded (2025) · (510) 234-3744
Dr. Lorna Cogen, M.D.
San Pablo, CA · No drug or device payments recorded (2025) · (510) 215-9930
Dr. Andrew Hajduczek, M.D.
San Pedro, CA · $44 in drug and device payments (2025) · (310) 213-5484
Dr. Edward Banks, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Frederick Penczak, MD
San Rafael, CA · $327 in drug and device payments (2025) · (707) 939-7411
Dr. Joe Zimmerman, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Kenneth Novich, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Mary Mockus, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Michael Parnes, MD
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Richard Geist
San Rafael, CA · No drug or device payments recorded (2025) · (415) 444-2000
Dr. Aileen Murphy, D.O.
San Ramon, CA · $33,493 in drug and device payments (2025) · Telehealth · (925) 338-8511
Dr. Barry Gardiner, M.D.
San Ramon, CA · No drug or device payments recorded (2025) · (925) 275-1210
Dr. Jing Zhou, M.D.
San Ramon, CA · $172 in drug and device payments (2025) · (925) 277-1055
Dr. Michael Wynn, MD
San Ramon, CA · $132 in drug and device payments (2025) · (925) 277-1055
Dr. Ron Cooper, M.D.
San Ramon, CA · No drug or device payments recorded (2025) · (925) 725-4228
Dr. William Hamstra, D.O.
San Ramon, CA · No drug or device payments recorded (2025) · (925) 447-0660
Dr. Frank Nastanski, M.D.
Santa Ana, CA · $3,420 in drug and device payments (2025) · (714) 547-1915
Dr. Martin Eisner, MD
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 756-4820
Dr. Michael Nguyen, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 552-7866
Dr. Nancy Way, M.D.
Santa Ana, CA · $21 in drug and device payments (2025) · (714) 852-3644
Dr. Ronald Neuman, MD
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 544-6580
Dr. Sherry Burchell, MD
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 547-1915
Dr. Stephen Goldstein, MD
Santa Ana, CA · No drug or device payments recorded (2025) · (949) 273-7300
Dr. Vahe Kerlakian, M.D.
Santa Ana, CA · No drug or device payments recorded (2025) · (714) 973-1122
Dr. Casey Barbaro, M.D.
Santa Barbara, CA · No drug or device payments recorded (2025) · (805) 455-9789
Dr. Christopher Quijano, DO
Santa Barbara, CA · $68 in drug and device payments (2025) · (805) 730-1470
Dr. David Thoman, M.D.
Santa Barbara, CA · $124 in drug and device payments (2025) · (805) 730-1470

Common questions

How many Surgery providers are in California?

There are 3,111 Surgery providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Surgery providers in California offer telehealth?

Yes. 468 of the 3,111 Surgery providers in California (about 15%) report offering telehealth services in CMS data.

Which cities in California have the most Surgery providers?

Los Angeles (260), San Francisco (205), San Diego (158) have the highest concentration of Surgery providers in California.

How many Surgery providers in California received drug or device company payments?

1,519 of 3,111 Surgery providers in California (49%) 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 General Surgeons in California work in independent practices or large health systems?

Among 1,794 General Surgeons in California enrolled in Medicare, 24% bill through a solo or small practice with fewer than 10 clinicians, 14% through a mid-size group of 10 to 99, and 62% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do General Surgeons in California work at?

According to CMS facility affiliation records, the California hospitals where the most General Surgeons hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.

Surgery in all 50 states Search all 3,111 in the directory Ask Zach for help choosing

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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 Surgery in California? Get featured.