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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. Rafael Bejar, M.D., PH.D.
La Jolla, CA · $4,963 in drug and device payments (2025) · Telehealth · (858) 534-5204
Dr. Rebecca Shatsky, M.D.
La Jolla, CA · $19,181 in drug and device payments (2025) · Telehealth · (858) 822-6583
Dr. Richard Burt, MD
La Jolla, CA · $30 in drug and device payments (2025) · (858) 554-8788
Dr. Richard Schwab, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · (858) 822-6185
Dr. Robert Brouillard
La Jolla, CA · No drug or device payments recorded (2025) · (858) 552-1410
Dr. Sabina Wallach, M.D.
La Jolla, CA · $344 in drug and device payments (2025) · Telehealth · (858) 558-8666
Dr. Sarah Boles, M.D.
La Jolla, CA · $93 in drug and device payments (2025) · Telehealth · (858) 822-6195
Dr. Sharon Choi
La Jolla, CA · $564 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Sonia Ali, M.D.
La Jolla, CA · $1,192 in drug and device payments (2025) · Telehealth · (858) 554-8788
Dr. Soo Park, M.D.
La Jolla, CA · $24,556 in drug and device payments (2025) · Telehealth · (858) 657-5281
Dr. Srila Gopal, M.D.
La Jolla, CA · $509 in drug and device payments (2025) · Telehealth · (858) 657-6028
Dr. Teresa Helsten, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · Telehealth · (858) 822-6195
Dr. William Miller, M.D.
La Jolla, CA · No drug or device payments recorded (2025) · (760) 753-5594
Dr. William Wachsman, M.D.
La Jolla, CA · $149 in drug and device payments (2025) · (858) 552-8585
Dr. Mark Turrill, M.D.
Lakeport, CA · $134 in drug and device payments (2025) · Telehealth · (707) 262-3060
Dr. Eric Cheung, D.O.
Lakewood, CA · $8,272 in drug and device payments (2025) · Telehealth · (562) 232-0550
Dr. Ersin Unal, MD, PHD
Lakewood, CA · $4,909 in drug and device payments (2025) · (562) 272-7630
Dr. Junaid Arshad
Lakewood, CA · $14,888 in drug and device payments (2025) · (562) 232-0550
Dr. Michael Del Rosario, M.D.
Lakewood, CA · $3,960 in drug and device payments (2025) · Telehealth · (562) 232-0550
Dr. Omkar Marathe, MD
Lakewood, CA · $3,684 in drug and device payments (2025) · Telehealth · (562) 232-0550
Dr. Raghu Nandan, M.D
Lakewood, CA · $4,850 in drug and device payments (2025) · Telehealth · (562) 272-7630
Dr. Sultanali Alidina, M.D.
Lakewood, CA · No drug or device payments recorded (2025) · (562) 630-3434
Dr. David Bodkin, M.D.
La Mesa, CA · $779 in drug and device payments (2025) · (619) 644-3030
Dr. Igor Medic, M.D.
La Mesa, CA · $3,052 in drug and device payments (2025) · (619) 644-3030
Dr. Kai Zu, M.D.
La Mesa, CA · $2,344 in drug and device payments (2025) · (619) 644-3030
Dr. Michael Crucitt, M.D.
La Mesa, CA · No drug or device payments recorded (2025) · (619) 644-6750
Dr. Reema Batra, MD
La Mesa, CA · $17,794 in drug and device payments (2025) · (619) 644-3030
Dr. Stanley Rubin, M.D.
La Mirada, CA · No drug or device payments recorded (2025) · (563) 943-7219
Dr. Amartej Merla, MD
Lancaster, CA · No drug or device payments recorded (2025) · Telehealth · (661) 902-5600
Dr. Hannah Asghari, MD
Lancaster, CA · No drug or device payments recorded (2025) · Telehealth · (661) 902-5600
Dr. Kevin Yoon, M.D.
Lancaster, CA · $583 in drug and device payments (2025) · Telehealth · (661) 902-5600
Dr. Neha Patil, MD
Lancaster, CA · No drug or device payments recorded (2025) · Telehealth · (661) 902-5600
Dr. Seyed Mohammad Reza Monemian, M.D
Lancaster, CA · No drug or device payments recorded (2025) · Telehealth · (661) 729-7100
Dr. Susan Lawrence, MD
Lancaster, CA · No drug or device payments recorded (2025) · (661) 948-8559
Dr. Tanyanika Phillips, MD
Lancaster, CA · No drug or device payments recorded (2025) · Telehealth · (661) 902-5600
Dr. Joshua Atiba, MD
La Selva Beach, CA · No drug or device payments recorded (2025) · (831) 761-1100
Dr. Sunny Philip, M.D.
Lodi, CA · $4,376 in drug and device payments (2025) · Telehealth · (209) 366-2616
Dr. Apoorva Anandan
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-0219
Dr. Chung-tsen Hsueh, M.D.
Loma Linda, CA · $1,370 in drug and device payments (2025) · Telehealth · (909) 558-2884
Dr. Daljeet Bansal, MD
Loma Linda, CA · $131 in drug and device payments (2025) · (909) 825-7084
Dr. Huynh Cao, MD
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 558-2262
Dr. Joel Brothers, MD
Loma Linda, CA · No drug or device payments recorded (2025) · Telehealth · (909) 558-4910
Dr. John Shin, M.D.
Loma Linda, CA · No drug or device payments recorded (2025) · Telehealth · (909) 558-2262
Dr. Roshni Narurkar
Loma Linda, CA · No drug or device payments recorded (2025) · Telehealth · (909) 558-4910
Dr. Simmer Kaur
Loma Linda, CA · No drug or device payments recorded (2025) · (909) 825-7084
Dr. Donna Walker, M.D.
Lompoc, CA · $118 in drug and device payments (2025) · Telehealth · (805) 735-1155
Dr. Melani Shaum, M.D.
Lompoc, CA · $271 in drug and device payments (2025) · Telehealth · (805) 735-1155
Dr. Alexander Ferreira, M.D.
Long Beach, CA · No drug or device payments recorded (2025) · Telehealth · (562) 590-0345
Dr. Chona Ray, N.P.
Long Beach, CA · No drug or device payments recorded (2025) · Telehealth · (562) 590-0345
Dr. David Yashar, MD
Long Beach, CA · $4,012 in drug and device payments (2025) · Telehealth · (562) 933-1877

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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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.