HealthcareDiscovery.AI / Doctors / California / Surgical Oncology

Surgical Oncologists in California

Data updated monthly · Last refresh October 2026

253 Surgical Oncology providers practice in California, including 98 (39%) 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.

253providers
98telehealth
Los Angelestop city

Surgical Oncology by city in California

Choose a city to see providers there.

Surgical Oncology in Los Angeles38 providers
Surgical Oncology in Duarte27 providers
Surgical Oncology in San Diego16 providers
Surgical Oncology in San Francisco16 providers
Surgical Oncology in Sacramento15 providers
Surgical Oncology in Santa Monica14 providers
Surgical Oncology in Orange12 providers
Surgical Oncology in Loma Linda10 providers
Surgical Oncology in West Hollywood8 providers
Surgical Oncology in San Jose6 providers
Surgical Oncology in Torrance5 providers
Surgical Oncology in Pasadena4 providers
Surgical Oncology in Lancaster4 providers
Surgical Oncology in Beverly Hills3 providers
Surgical Oncology in Upland3 providers
Surgical Oncology in Fresno3 providers
Surgical Oncology in Valencia3 providers
Surgical Oncology in Long Beach3 providers
Surgical Oncology in Newport Beach3 providers
Surgical Oncology in Rancho Mirage2 providers
Surgical Oncology in Burlingame2 providers
Surgical Oncology in Thousand Oaks2 providers
Surgical Oncology in Santa Barbara2 providers
Surgical Oncology in Stockton2 providers

Surgical Oncology 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. Vennila Padmanaban, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Gregory Senofsky, MD
Santa Clarita, CA · $18 in drug and device payments (2025) · (661) 255-9287
Dr. Alexander Christ, M.D.
Santa Monica, CA · $102,186 in drug and device payments (2025) · Telehealth · (310) 319-1234
Dr. Alice Chung, M.D.
Santa Monica, CA · $163 in drug and device payments (2025) · Telehealth · (310) 202-6204
Dr. Anton Bilchik, M.D., PH.D., M.B.A.
Santa Monica, CA · $350 in drug and device payments (2025) · Telehealth · (310) 449-5206
Dr. Bradley Bandera, MD
Santa Monica, CA · $1,584 in drug and device payments (2025) · (310) 449-5249
Dr. Brian Diskin, M.D.
Santa Monica, CA · $4,330 in drug and device payments (2025) · (310) 315-6125
Dr. Brian Kadera, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 393-3583
Dr. Connie Chiu, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 449-5268
Dr. Crystal Fancher, M.D.
Santa Monica, CA · $1,338 in drug and device payments (2025) · (310) 582-7096
Dr. Decio Rangel, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 828-7454
Dr. Jonathan King, M.D.
Santa Monica, CA · $20 in drug and device payments (2025) · Telehealth · (310) 319-4080
Dr. Nefertiti Brown, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 998-3989
Dr. Richard Essner, M.D.
Santa Monica, CA · $465 in drug and device payments (2025) · Telehealth · (310) 829-8317
Dr. Trevan Fischer, M.D.
Santa Monica, CA · $78 in drug and device payments (2025) · (310) 829-8781
Dr. Victoria O'connor, M.D.
Santa Monica, CA · $43 in drug and device payments (2025) · (310) 449-5228
Dr. Stephanie Young, MD, MPH
Sherman Oaks, CA · $1,150 in drug and device payments (2025) · (714) 919-8836
Dr. Aaron Lewis, MD
South Pasadena, CA · $952 in drug and device payments (2025) · Telehealth · (626) 775-3514
Dr. Amy Polverini, MD
South Pasadena, CA · No drug or device payments recorded (2025) · Telehealth · (626) 396-2900
Dr. Meng-fey Lin-duffy, DO
S Pasadena, CA · $84 in drug and device payments (2025) · Telehealth · (626) 396-2900
Dr. Jeffrey Norton, MD
Stanford, CA · $3,520 in drug and device payments (2025) · (650) 498-6606
Dr. Julio Vaquerano, M.D.
Stockton, CA · $1,000 in drug and device payments (2025) · (209) 735-5000
Dr. Maranda Pahlkotter, MD
Stockton, CA · $3,033 in drug and device payments (2025) · (209) 946-6800
Dr. Emanuel Shapera, MD
Temecula, CA · $1,066 in drug and device payments (2025) · Telehealth · (951) 501-4200
Dr. Mai Brooks, MD
Thousand Oaks, CA · $95 in drug and device payments (2025) · (805) 379-4677
Dr. Nikita Shah, MD
Thousand Oaks, CA · $95 in drug and device payments (2025) · Telehealth · (805) 496-2949
Dr. Andrew Nguyen, M.D.
Torrance, CA · $72 in drug and device payments (2025) · Telehealth · (310) 750-1715
Dr. Junko Ozao-choy, M.D.
Torrance, CA · No drug or device payments recorded (2025) · (310) 222-2701
Dr. Kathryn Chen, MD
Torrance, CA · $34 in drug and device payments (2025) · (310) 222-2700
Dr. Moshe Faynsod, MD
Torrance, CA · No drug or device payments recorded (2025) · (310) 750-1715
Dr. Neil Bhayani, MD
Torrance, CA · $562 in drug and device payments (2025) · (310) 373-6864
Dr. Weston Stover, MD
Travis Afb, CA · $151 in drug and device payments (2025) · (707) 423-5224
Dr. Bradford Kim, M.D.
Upland, CA · No drug or device payments recorded (2025) · Telehealth · (909) 949-2242
Dr. Lawrence Wagman, MD
Upland, CA · $752 in drug and device payments (2025) · (909) 949-2242
Dr. Vasilena Zheleva, M.D.
Upland, CA · No drug or device payments recorded (2025) · (909) 949-2242
Dr. Dortha Chu, MD., PHD,
Valencia, CA · $54 in drug and device payments (2025) · Telehealth · (661) 467-2371
Dr. Edgar Enriquez, M.D.
Valencia, CA · $6,629 in drug and device payments (2025) · (661) 253-1353
Dr. George Barnes, MD
Valencia, CA · $164 in drug and device payments (2025) · (661) 200-1525
Dr. Alexandra Moore, M.D.
Vallejo, CA · No drug or device payments recorded (2025) · (925) 708-8981
Dr. Thomas Lomis, M.D.
Van Nuys, CA · $1,002 in drug and device payments (2025) · (818) 782-3255
Dr. Shawn Steen, MD
Ventura, CA · $457 in drug and device payments (2025) · (805) 652-5964
Dr. June Peng, MD
Walnut Creek, CA · $1,411 in drug and device payments (2025) · (925) 296-7340
Dr. Alexandra Gangi, M.D.
West Hollywood, CA · $1,054 in drug and device payments (2025) · Telehealth · (310) 423-6746
Dr. Allan Silberman, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-5470
Dr. Armando Giuliano, MD, FACS, FRCSED
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-9970
Dr. Farin Amersi, M.D.
West Hollywood, CA · $363 in drug and device payments (2025) · Telehealth · (310) 423-5470
Dr. Ioannis Konstantinidis, M.D.
West Hollywood, CA · $3,211 in drug and device payments (2025) · Telehealth · (310) 423-9331
Dr. Lauren Destefano, MD
West Hollywood, CA · $213 in drug and device payments (2025) · (310) 423-9331
Dr. Lindi Vanderwalde, MD
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-9331
Dr. Scott Karlan, M.D.
West Hollywood, CA · No drug or device payments recorded (2025) · (310) 423-9331

Common questions

How many Surgical Oncology providers are in California?

There are 253 Surgical Oncology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Surgical Oncology providers in California offer telehealth?

Yes. 98 of the 253 Surgical Oncology providers in California (about 39%) report offering telehealth services in CMS data.

Which cities in California have the most Surgical Oncology providers?

Los Angeles (38), Duarte (27), San Diego (16) have the highest concentration of Surgical Oncology providers in California.

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

148 of 253 Surgical Oncology providers in California (58%) 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 Surgical Oncologists in California work in independent practices or large health systems?

Among 182 Surgical Oncologists in California enrolled in Medicare, 14% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 78% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Surgical Oncologists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Surgical Oncologists hold privileges are Cedars-Sinai Medical Center in Los Angeles; Ronald Reagan UCLA Medical Center in Los Angeles; UCSF Medical Center in San Francisco.

Related reading on HealthcareDiscovery.AI

Surgical Oncology in all 50 states Search all 253 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 Surgical Oncology in California? Get featured.