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. Rex Williams, MD
Oakland, CA · $22 in drug and device payments (2025) · (510) 752-6418
Dr. Reza Rahbari, M.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 437-4089
Dr. Rupert Horoupian, MD
Oakland, CA · $982 in drug and device payments (2025) · Telehealth · (510) 465-5523
Dr. Sani Yamout, MD
Oakland, CA · $20 in drug and device payments (2025) · (510) 752-1000
Dr. Steven Stanten, MD
Oakland, CA · $5,171 in drug and device payments (2025) · Telehealth · (510) 465-5523
Dr. Susie Choe, MD
Oakland, CA · $38 in drug and device payments (2025) · (510) 752-1000
Dr. Terrence Liu, M.D.
Oakland, CA · No drug or device payments recorded (2025) · (510) 437-4965
Dr. Terry Chong, MD
Oakland, CA · No drug or device payments recorded (2025) · (510) 752-1000
Dr. Thomas Slemmer, M.D.
Oakland, CA · No drug or device payments recorded (2025) · (415) 370-9682
Dr. Tina Sasaki, M.D.
Oakland, CA · $783 in drug and device payments (2025) · Telehealth · (510) 633-7761
Dr. Tony Chan, MD
Oakland, CA · $2,137 in drug and device payments (2025) · (510) 752-1000
Dr. Veronica Shim, MD
Oakland, CA · $1,919 in drug and device payments (2025) · (510) 752-1000
Dr. Augustine Wilson, MD
Oceanside, CA · No drug or device payments recorded (2025) · (760) 725-1288
Dr. Eric Rypins Md Facs Apc, MD FACS APC
Oceanside, CA · No drug or device payments recorded (2025) · (760) 732-1166
Dr. Hussna Wakily, MD
Oceanside, CA · $895 in drug and device payments (2025) · (760) 724-5352
Dr. John Hulse, MD
Oceanside, CA · $137 in drug and device payments (2025) · (760) 725-1288
Dr. Kristen Nassery, MD
Oceanside, CA · $105 in drug and device payments (2025) · (760) 724-5352
Dr. Kristine Parra, MD
Oceanside, CA · No drug or device payments recorded (2025) · (760) 725-1356
Dr. Landon King, M.D.
Oceanside, CA · No drug or device payments recorded (2025) · (760) 719-3695
Dr. Scott Trask, M.D.
Oceanside, CA · No drug or device payments recorded (2025) · (760) 725-1356
Dr. Joanna Lim, M.D.
Ontario, CA · $1,333 in drug and device payments (2025) · (909) 724-5000
Dr. Stewart Rendon, M.D.
Ontario, CA · $1,372 in drug and device payments (2025) · (909) 460-4155
Dr. Sunal Patel, M.D.
Ontario, CA · No drug or device payments recorded (2025) · (909) 724-3223
Dr. Abtin Khosravi, M.D.
Orange, CA · $5,937 in drug and device payments (2025) · Telehealth · (714) 541-4996
Dr. Alexander Marrotte, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Alisan Fathalizadeh, M.D., M.P.H.
Orange, CA · $13,971 in drug and device payments (2025) · Telehealth · (714) 456-8888
Dr. Amy Li, M.D.
Orange, CA · $121 in drug and device payments (2025) · (714) 509-2742
Dr. Andrew Barleben, M.D., M.P.H.
Orange, CA · $54,395 in drug and device payments (2025) · Telehealth · (714) 456-5532
Dr. Annie Wang, M.D.
Orange, CA · $4,397 in drug and device payments (2025) · Telehealth · (917) 328-6369
Dr. Atul Madan, MD
Orange, CA · $270 in drug and device payments (2025) · Telehealth · (562) 270-5411
Dr. Brian Smith, MD
Orange, CA · $556 in drug and device payments (2025) · Telehealth · (714) 456-8598
Dr. Bryan Campbell, D.O.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Christina Kopatz, MD
Orange, CA · $1,085 in drug and device payments (2025) · (714) 509-2377
Dr. Christopher Armstrong, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8598
Dr. Darshak Thosani, MD
Orange, CA · $1,038 in drug and device payments (2025) · (714) 456-7890
Dr. David K Imagawa, MD
Orange, CA · $7,929 in drug and device payments (2025) · Telehealth · (714) 456-8978
Dr. Derek Banyard, M.D.
Orange, CA · $30,097 in drug and device payments (2025) · (714) 939-4028
Dr. Ellyn Smith, M.D
Orange, CA · $150 in drug and device payments (2025) · (714) 456-8598
Dr. Eric Kuncir, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5890
Dr. Eric Pham, MD
Orange, CA · $431 in drug and device payments (2025) · (714) 541-4343
Dr. Grace Hwang, MD
Orange, CA · $4,925 in drug and device payments (2025) · Telehealth · (714) 202-5682
Dr. Hisham El-bayar, M.D., F.A.C.S.
Orange, CA · $27 in drug and device payments (2025) · (714) 835-8300
Dr. Hubert Kim, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5532
Dr. Hugh Chung
Orange, CA · $1,330 in drug and device payments (2025) · (714) 456-5840
Dr. Janelle Lopez, DO
Orange, CA · $238 in drug and device payments (2025) · (714) 456-8888
Dr. Jay Harness, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 744-8601
Dr. Jeffrey Chao, MD
Orange, CA · $33 in drug and device payments (2025) · (714) 880-7812
Dr. Jill Endres, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-6383
Dr. John Stuart Nelson, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Joseph Chen, M.D.
Orange, CA · $49 in drug and device payments (2025) · (714) 998-4408

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.

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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.