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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. Mediget Teshome, MD
Los Angeles, CA · $4,208 in drug and device payments (2025) · Telehealth · (310) 825-2144
Dr. Micah Brainerd, MD
Los Angeles, CA · $469 in drug and device payments (2025) · (989) 574-8672
Dr. Philip Haigh, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Raquel Prati, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 794-1646
Dr. Robert Bennion, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-6078
Dr. Ronald Hurst, M.D.
Los Angeles, CA · $12,847 in drug and device payments (2025) · Telehealth · (310) 231-2121
Dr. Scott Um, MD
Los Angeles, CA · $1,931 in drug and device payments (2025) · (310) 794-7788
Dr. Stephen Sener, M.D.
Los Angeles, CA · $132 in drug and device payments (2025) · (323) 442-9062
Dr. Sujit Kulkarni, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5908
Dr. Theodore O'connell, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Yasir Akmal
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-5892
Dr. Hootan Roozrokh, MD
Los Gatos, CA · $27 in drug and device payments (2025) · (408) 688-2149
Dr. Theresa Zogakis, MD
Marysville, CA · No drug or device payments recorded (2025) · (530) 749-4304
Dr. Scott Hundahl, M.D.
Mather, CA · No drug or device payments recorded (2025) · (916) 843-7174
Dr. Ahmad Abou Abbass, M.D
Mission Viejo, CA · $128,344 in drug and device payments (2025) · Telehealth · (949) 364-1007
Dr. Lana Boladian, PA-C
Newport Beach, CA · $1,298 in drug and device payments (2025) · (949) 722-6237
Dr. Megan Gregor, NP
Newport Beach, CA · $136 in drug and device payments (2025) · Telehealth · (949) 764-8251
Dr. Melvin Silverstein, MD
Newport Beach, CA · $4,694 in drug and device payments (2025) · (310) 488-9510
Dr. Giovanni Begossi, M.D.
Oakland, CA · $2,178 in drug and device payments (2025) · Telehealth · (510) 204-8168
Dr. Alexandra Lopez-aguiar, M.D.
Orange, CA · $468 in drug and device payments (2025) · (714) 456-7890
Dr. Brittany Sullivan, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Erin Lin, D.O.
Orange, CA · $271 in drug and device payments (2025) · Telehealth · (714) 880-7812
Dr. Glenn Allison, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 633-9761
Dr. Holly Yong, M.D.
Orange, CA · $157 in drug and device payments (2025) · Telehealth · (714) 880-7812
Dr. James Jakowatz, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8171
Dr. John A Butler, MD
Orange, CA · $27 in drug and device payments (2025) · (714) 456-8978
Dr. Karen T Lane, MD
Orange, CA · $279 in drug and device payments (2025) · Telehealth · (714) 456-8978
Dr. Melissa Mao, MD
Orange, CA · $51 in drug and device payments (2025) · Telehealth · (714) 456-8000
Dr. Oliver Eng, M.D.
Orange, CA · $28,113 in drug and device payments (2025) · Telehealth · (714) 880-7812
Dr. Thuy Tran, M.D.
Orange, CA · $58 in drug and device payments (2025) · Telehealth · (714) 456-7890
Dr. Valentina Bonev
Orange, CA · No drug or device payments recorded (2025) · (714) 571-5900
Dr. Laura Lee, M.D.
Palm Springs, CA · $2,061 in drug and device payments (2025) · (760) 992-7217
Dr. Elizabeth Rupp, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Alicia Terando, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · Telehealth · (424) 314-0182
Dr. Amir Ali Rahnemai Azar, M.D.
Pasadena, CA · $7,210 in drug and device payments (2025) · (310) 571-5430
Dr. Jeannie Shen, MD
Pasadena, CA · No drug or device payments recorded (2025) · Telehealth · (424) 314-0182
Dr. Sherin Shirazi, M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 795-9023
Dr. David Hyams, MD
Rancho Mirage, CA · $278 in drug and device payments (2025) · Telehealth · (760) 773-3311
Dr. Edgar Staren, MD
Rancho Mirage, CA · $695 in drug and device payments (2025) · Telehealth · (760) 674-3899
Dr. Vicki Philben, M.D.
Redding, CA · No drug or device payments recorded (2025) · (530) 244-2223
Dr. Jay Owens, M.D.
Roseville, CA · No drug or device payments recorded (2025) · (916) 773-8750
Dr. Claire Graves, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · Telehealth · (916) 734-5959
Dr. Hamed Kargozaran, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-2727
Dr. James Goodnight, M.D.
Sacramento, CA · No drug or device payments recorded (2025) · (916) 734-3190
Dr. John Lee, M.D.
Sacramento, CA · $349 in drug and device payments (2025) · (916) 733-9660
Dr. Lakhbir Sandhu, MD PHD FRCSC
Sacramento, CA · No drug or device payments recorded (2025) · (916) 688-2000
Dr. Lisa Guirguis, M.D.
Sacramento, CA · $294 in drug and device payments (2025) · (916) 733-9660
Dr. Melinda Mortenson, M.D.
Sacramento, CA · $29 in drug and device payments (2025) · (916) 973-5649
Dr. Michael Schlieman, MD
Sacramento, CA · No drug or device payments recorded (2025) · (906) 688-2014
Dr. Nadine Schenker, PA-C
Sacramento, CA · No drug or device payments recorded (2025) · (916) 733-9660

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.

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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 Surgical Oncology in California? Get featured.