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Medical Oncology in Irvine, California

Data updated monthly · Last refresh September 2026

6 Medical Oncology providers practice in Irvine. Listings are drawn from federal public records and are not endorsements.

Medical Oncology providers in Irvine

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. Charles Nguyen, M.D.
Irvine, CA · $6,189 in drug and device payments (2025) · Telehealth · (949) 671-4673
Dr. Elizabeth Conner, MD
Irvine, CA · $35 in drug and device payments (2025) · Telehealth · (800) 826-4673
Dr. Irene Kang, M.D.
Irvine, CA · $12,974 in drug and device payments (2025) · Telehealth · (949) 671-4673
Dr. Katarina Vasiljevic, M.D.
Irvine, CA · $150 in drug and device payments (2025) · Telehealth · (888) 333-4673
Dr. Lee Hong, MD, PHD
Irvine, CA · $606 in drug and device payments (2025) · Telehealth · (949) 671-4523
Dr. Pashtoon Kasi, MD, MS
Irvine, CA · $122 in drug and device payments (2025) · Telehealth · (800) 826-4673

Common questions

How many Medical Oncology providers are in Irvine, California?

There are 6 Medical Oncology providers with active NPI records practicing in Irvine, according to federal NPPES data refreshed monthly.

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 Irvine 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.