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Medical Oncology in Los Angeles, California

Data updated monthly · Last refresh September 2026

39 Medical Oncology providers practice in Los Angeles, and 74% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Medical Oncology providers in Los Angeles

Listed alphabetically. 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. Afsaneh Barzi, M.D.
Los Angeles, CA · $157 in drug and device payments (2025) · (323) 865-3105
Dr. Amir Goldkorn, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 865-3105
Dr. Anastasia Martynova, M.D.
Los Angeles, CA · $16,291 in drug and device payments (2025) · Telehealth · (323) 865-3900
Dr. Anishka D'souza, M.D.
Los Angeles, CA · $549 in drug and device payments (2025) · Telehealth · (323) 865-3000
Dr. Anthony El-khoueiry, M.D.
Los Angeles, CA · $28,225 in drug and device payments (2025) · Telehealth · (323) 865-3000
Dr. Barbara Gitlitz, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 865-3105
Dr. Barliz Waissengrin, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (818) 233-2154
Dr. Bing Xia, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 865-3105
Dr. Christy Russell, M.D.
Los Angeles, CA · $132 in drug and device payments (2025) · (323) 865-3105
Dr. Coyin Oh
Los Angeles, CA · $23 in drug and device payments (2025) · (310) 423-8030
Dr. Daphne Stewart, M.D
Los Angeles, CA · $174 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Darcy Spicer, M.D.
Los Angeles, CA · $51 in drug and device payments (2025) · Telehealth · (323) 865-3105
Dr. David Agus, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 272-7640
Dr. David Freyer, DO
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 865-3000
Dr. David Quinn, M.D.
Los Angeles, CA · $26 in drug and device payments (2025) · Telehealth · (323) 865-3956
Dr. David Stolinsky, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 659-5099
Dr. David Tran, MD PHD
Los Angeles, CA · $20,781 in drug and device payments (2025) · (323) 442-5720
Dr. Evanthia Roussos Torres, M.D.
Los Angeles, CA · $43 in drug and device payments (2025) · (323) 865-3105
Dr. Heinz-josef Lenz, M.D.
Los Angeles, CA · $81,732 in drug and device payments (2025) · Telehealth · (323) 865-3105
Dr. Jacek Pinski, M.D.
Los Angeles, CA · $74,810 in drug and device payments (2025) · Telehealth · (323) 865-3000
Dr. Jacob Thomas
Los Angeles, CA · $69 in drug and device payments (2025) · Telehealth · (323) 865-3105
Dr. James Hu, M.D.
Los Angeles, CA · $3,622 in drug and device payments (2025) · Telehealth · (310) 423-8530
Dr. Jin Sun Bitar, M.D.
Los Angeles, CA · $16 in drug and device payments (2025) · Telehealth · (310) 423-8530
Dr. Kamya Sankar
Los Angeles, CA · $2,528 in drug and device payments (2025) · Telehealth · (310) 423-8530
Dr. Lawrence Liu, MD
Los Angeles, CA · $895 in drug and device payments (2025) · Telehealth · (310) 423-1160
Dr. Mark Agulnik, MD
Los Angeles, CA · $29,811 in drug and device payments (2025) · Telehealth · (323) 865-3000
Dr. Maryliza El-masry, M.D.
Los Angeles, CA · $212 in drug and device payments (2025) · Telehealth · (323) 226-7556
Dr. Michael Castro, M.D.
Los Angeles, CA · $2,913 in drug and device payments (2025) · Telehealth · (808) 445-4085
Dr. Miguel Quirch, MD
Los Angeles, CA · $12,614 in drug and device payments (2025) · Telehealth · (213) 481-3948
Dr. Mitchell Gross, M.D.
Los Angeles, CA · $131 in drug and device payments (2025) · Telehealth · (310) 272-7640
Dr. Patricia Young, MD
Los Angeles, CA · $25 in drug and device payments (2025) · Telehealth · (310) 423-5585
Dr. Priya Jayachandran, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 865-3950
Dr. Robert Gale
Los Angeles, CA · $1,300 in drug and device payments (2025) · (310) 442-9010
Dr. Sandra Algaze
Los Angeles, CA · $7,160 in drug and device payments (2025) · Telehealth · (323) 865-3000
Dr. Sarmad Sadeghi, MD, MS, PHD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 865-3000
Dr. Stephen Liu, MD
Los Angeles, CA · $131,599 in drug and device payments (2025) · Telehealth · (323) 865-3105
Dr. Steven Grossman, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 865-0862
Dr. Syma Iqbal, M.D.
Los Angeles, CA · $59,513 in drug and device payments (2025) · Telehealth · (323) 865-3105
Dr. Varsha Tulpule, M.D.
Los Angeles, CA · $697 in drug and device payments (2025) · Telehealth · (323) 865-3105

Common questions

How many Medical Oncology providers are in Los Angeles, California?

There are 39 Medical Oncology providers with active NPI records practicing in Los Angeles, according to federal NPPES data refreshed monthly.

How many Medical Oncology providers in Los Angeles received drug or device company payments?

29 of 39 (74%) 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 records 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.

All specialties in Los Angeles Medical Oncology across California

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.