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 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. Robina Smith, M.D.Fullerton, CA · $132 in drug and device payments (2025) ·
(714) 446-5296 Dr. Natalie Seiser, MDGlendale, CA · No drug or device payments recorded (2025) ·
(818) 484-8049 Dr. Leah Kelley, M.D.Greenbrae, CA · $74 in drug and device payments (2025) · Telehealth ·
(415) 925-5035 Dr. Amy Copeland, MDIrvine, CA · No drug or device payments recorded (2025) ·
(949) 671-8000 Dr. Jason Sicklick, M.D.La Jolla, CA · $8,331 in drug and device payments (2025) · Telehealth ·
(800) 926-8273 Dr. Louis Rivera, M.D.La Jolla, CA · $238 in drug and device payments (2025) · Telehealth ·
(858) 554-8984 Dr. Aaron Scott, M.D.Lancaster, CA · No drug or device payments recorded (2025) · Telehealth ·
(661) 902-5600 Dr. Brendan Boland, MDLancaster, CA · No drug or device payments recorded (2025) ·
(661) 902-5600 Dr. Hans Schoellhammer, MDLancaster, CA · No drug or device payments recorded (2025) · Telehealth ·
(661) 902-5600 Dr. Heather Player, MDLancaster, CA · $82 in drug and device payments (2025) · Telehealth ·
(661) 902-5600 Dr. Aaron Saunders, M.D.Loma Linda, CA · $1,769 in drug and device payments (2025) · Telehealth ·
(909) 558-2822 Dr. David Caba Molina, M.D, MS, MPHLoma Linda, CA · $4,909 in drug and device payments (2025) ·
(909) 558-5939 Dr. Fabrizio Luca, M.D.Loma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-2822 Dr. Kathleen Stutz, DOLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-2822 Dr. Laurel GuthrieLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-5939 Dr. Mark Reeves, M.D.Loma Linda, CA · $10,498 in drug and device payments (2025) ·
(909) 558-2822 Dr. Michael O'leary, MDLoma Linda, CA · $383 in drug and device payments (2025) · Telehealth ·
(909) 558-2822 Dr. Naveenraj Solomon, MDLoma Linda, CA · $131 in drug and device payments (2025) ·
(909) 558-2822 Dr. Raja Narayan, MD MPHLoma Linda, CA · $4,015 in drug and device payments (2025) · Telehealth ·
(909) 558-2822 Dr. Rhami KhorfanLoma Linda, CA · $1,894 in drug and device payments (2025) · Telehealth ·
(909) 558-5939 Dr. Dawn Hills, M.D.Long Beach, CA · No drug or device payments recorded (2025) ·
(626) 390-3197 Dr. Lun Hom, M.D.Long Beach, CA · No drug or device payments recorded (2025) ·
(562) 426-0301 Dr. Willie Goffney, MDLong Beach, CA · $267 in drug and device payments (2025) ·
(562) 531-9272 Dr. Amanda Woodworth, M.D.Los Angeles, CA · $1,061 in drug and device payments (2025) ·
(323) 442-9062 Dr. Areti Tillou, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 794-7788 Dr. Azadeh Carr, M.D.Los Angeles, CA · $287 in drug and device payments (2025) ·
(323) 442-9062 Dr. Burton Eisenberg, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 865-3535 Dr. Cristina Ferrone, M.D.Los Angeles, CA · $1,438 in drug and device payments (2025) · Telehealth ·
(310) 423-6746 Dr. Dilipkumar Parekh, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 442-9062 Dr. Elizabeth Arena, M.D.Los Angeles, CA · $101 in drug and device payments (2025) · Telehealth ·
(213) 947-4938 Dr. Fahima Dossa, MDLos Angeles, CA · $119 in drug and device payments (2025) ·
(310) 423-6746 Dr. Frederick Eilber, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 825-7086 Dr. Frederick Eilber, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-7086 Dr. Fumito Ito, MD PHDLos Angeles, CA · $55 in drug and device payments (2025) ·
(323) 442-9062 Dr. Hector Ramos, M.D.Los Angeles, CA · $38 in drug and device payments (2025) ·
(323) 442-5908 Dr. Helena Chang, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 825-2144 Dr. Hyunwoo Kang, MDLos Angeles, CA · $211 in drug and device payments (2025) · Telehealth ·
(323) 442-5860 Dr. James Economou, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 794-1646 Dr. James Tomlinson, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-6909 Dr. Jason Cohen, M.D.Los Angeles, CA · $121 in drug and device payments (2025) ·
(310) 652-3779 Dr. Joseph Femino, MDLos Angeles, CA · $179 in drug and device payments (2025) · Telehealth ·
(323) 442-5860 Dr. Joshua Ellenhorn, MDLos Angeles, CA · $677 in drug and device payments (2025) ·
(310) 289-1518 Dr. Lawrence Menendez, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 442-5830 Dr. Lee Zuckerman, M.D.Los Angeles, CA · $1,285 in drug and device payments (2025) · Telehealth ·
(323) 442-5860 Dr. Leland Foshag, M.D.Los Angeles, CA · $25 in drug and device payments (2025) · Telehealth ·
(310) 479-1215 Dr. Louis Difronzo, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 783-4011 Dr. Maggie Dinome, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(424) 259-8791 Dr. Marc AttiyehLos Angeles, CA · $173 in drug and device payments (2025) · Telehealth ·
(310) 423-6746 Dr. Maria Nelson, M.D.Los Angeles, CA · $506 in drug and device payments (2025) · Telehealth ·
(323) 442-9062 Dr. Mark Girgis, MDLos Angeles, CA · $252 in drug and device payments (2025) · Telehealth ·
(310) 267-9099 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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