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Hematologists and Oncologists in California

Data updated monthly · Last refresh October 2026

1,582 Hematology & Oncology providers practice in California, including 855 (54%) 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.

1,582providers
855telehealth
Los Angelestop city

Hematology & Oncology by city in California

Choose a city to see providers there.

Hematology & Oncology in Los Angeles152 providers
Hematology & Oncology in San Diego89 providers
Hematology & Oncology in Sacramento77 providers
Hematology & Oncology in San Francisco64 providers
Hematology & Oncology in Orange62 providers
Hematology & Oncology in La Jolla46 providers
Hematology & Oncology in Santa Monica43 providers
Hematology & Oncology in Torrance33 providers
Hematology & Oncology in Fresno31 providers
Hematology & Oncology in Stanford30 providers
Hematology & Oncology in Walnut Creek23 providers
Hematology & Oncology in Newport Beach21 providers
Hematology & Oncology in Rancho Mirage19 providers
Hematology & Oncology in Long Beach18 providers
Hematology & Oncology in Roseville17 providers
Hematology & Oncology in Fountain Valley17 providers
Hematology & Oncology in Beverly Hills16 providers
Hematology & Oncology in Santa Barbara16 providers
Hematology & Oncology in San Jose15 providers
Hematology & Oncology in Oakland14 providers
Hematology & Oncology in Downey14 providers
Hematology & Oncology in Anaheim14 providers
Hematology & Oncology in Irvine13 providers
Hematology & Oncology in Santa Rosa13 providers

Hematology & 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. Daniel Vicario, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (800) 926-8273
Dr. Dan Kaufman, MD
San Diego, CA · $337 in drug and device payments (2025) · (858) 822-6600
Dr. Dean Peng, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Donald Balfour, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 446-1530
Dr. Edward Huynh, MD
San Diego, CA · $3,599 in drug and device payments (2025) · Telehealth · (858) 939-6622
Dr. Elaine Muchmore, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 642-3356
Dr. Eliana Kozin, BCH BAO
San Diego, CA · $1,115 in drug and device payments (2025) · Telehealth · (858) 692-6622
Dr. Eric Roth
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Erin Reid, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 822-6197
Dr. Ezra Cohen, MD
San Diego, CA · $5,000 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Fareeha Siddiqui, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (414) 364-4536
Dr. Frederick Millard, M.D.
San Diego, CA · $112 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. George Luiken, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 532-7302
Dr. Gregory Daniels, M.D., PH.D.
San Diego, CA · $149 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Heather Tracy, MD
San Diego, CA · $112 in drug and device payments (2025) · Telehealth · (858) 637-7888
Dr. Isan Chen, M.D.
San Diego, CA · $65 in drug and device payments (2025) · (858) 332-3428
Dr. James Coggan, D.O.
San Diego, CA · $56 in drug and device payments (2025) · Telehealth · (858) 637-7888
Dr. James Mangan, MD
San Diego, CA · $18,348 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. James Randall, M.D.
San Diego, CA · $240 in drug and device payments (2025) · Telehealth · (858) 249-6748
Dr. Jennifer Fisher, M.D.
San Diego, CA · $1,237 in drug and device payments (2025) · Telehealth · (858) 637-7888
Dr. Jenny Devitt, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Jenny Zhou, M.D.
San Diego, CA · $12,201 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Jeremy Chang, M.D.
San Diego, CA · $34 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Joel Lamon, MD
San Diego, CA · $2,635 in drug and device payments (2025) · Telehealth · (858) 649-5100
Dr. John Oval, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Justin Moyers, M.D.
San Diego, CA · $93 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Justin Persico, M.D.
San Diego, CA · $84 in drug and device payments (2025) · Telehealth · (619) 543-6737
Dr. Kadhim Al Banaa, MD
San Diego, CA · $2,431 in drug and device payments (2025) · Telehealth · (858) 657-5281
Dr. Kathryn Bollin, M.D.
San Diego, CA · $1,340 in drug and device payments (2025) · Telehealth · (619) 849-4469
Dr. Kay Yeung, MD
San Diego, CA · $176 in drug and device payments (2025) · Telehealth · (619) 543-6268
Dr. Kenneth Kaushansky, M.D
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6170
Dr. Kentson Lam, M.D., PH.D.
San Diego, CA · $3,080 in drug and device payments (2025) · Telehealth · (619) 543-6268
Dr. Kristen Rice, M.D.
San Diego, CA · $95 in drug and device payments (2025) · Telehealth · (858) 637-7888
Dr. Lynn Bemiller, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 249-6748
Dr. Lyudmila Bazhenova, M.D.
San Diego, CA · $63,335 in drug and device payments (2025) · Telehealth · (858) 822-6100
Dr. Marie Shieh, MD
San Diego, CA · $674 in drug and device payments (2025) · Telehealth · (858) 637-7888
Dr. Meera Ravindranathan, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 939-6622
Dr. Michael Choi, M.D.
San Diego, CA · $356 in drug and device payments (2025) · Telehealth · (858) 822-6100
Dr. Nadeem Tabbara
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Nancy Lee, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (877) 236-0333
Dr. Nandita Raja, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Nicole Lieberman, MD
San Diego, CA · $150 in drug and device payments (2025) · (619) 532-7300
Dr. Nina Liu, MD
San Diego, CA · $36 in drug and device payments (2025) · (619) 528-5000
Dr. Paul Cheng, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 642-3356
Dr. Paulette Gabbai-saldate, M.D.
San Diego, CA · $1,851 in drug and device payments (2025) · Telehealth · (619) 849-4469
Dr. Paul Fanta, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Peter Holman, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 657-8570
Dr. Peter Vu, M.D.
San Diego, CA · $471 in drug and device payments (2025) · Telehealth · (858) 249-6751
Dr. Preston Gable, M.D.
San Diego, CA · $30 in drug and device payments (2025) · (619) 218-7490
Dr. Priya Singh, M.D.
San Diego, CA · $918 in drug and device payments (2025) · Telehealth · (858) 939-6622

Conditions Hematology & Oncology providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Hematology & Oncology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Hematology & Oncology providers are in California?

There are 1,582 Hematology & Oncology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Hematology & Oncology providers in California offer telehealth?

Yes. 855 of the 1,582 Hematology & Oncology providers in California (about 54%) report offering telehealth services in CMS data.

Which cities in California have the most Hematology & Oncology providers?

Los Angeles (152), San Diego (89), Sacramento (77) have the highest concentration of Hematology & Oncology providers in California.

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

995 of 1,582 Hematology & Oncology providers in California (63%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Hematology & Oncology providers in California treat?

Hematology & Oncology providers commonly treat breast cancer, lung cancer, lymphoma, leukemia, anemia and related conditions. Individual practices vary, so confirm with the provider before booking.

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 Hematologists and Oncologists in California work in independent practices or large health systems?

Among 1,081 Hematologists and Oncologists in California enrolled in Medicare, 11% bill through a solo or small practice with fewer than 10 clinicians, 12% through a mid-size group of 10 to 99, and 77% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Hematologists and Oncologists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Hematologists and Oncologists hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; Uci Health-Orange in Orange; Santa Monica - UCLA Med Ctr & Orthopaedic Hospital in Santa Monica.

Related reading on HealthcareDiscovery.AI

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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 Hematology & Oncology in California? Get featured.