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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. Steven Applebaum, MD
Pasadena, CA · No drug or device payments recorded (2025) · Telehealth · (626) 396-2999
Dr. Tiffany Shaw, MD
Pasadena, CA · No drug or device payments recorded (2025) · Telehealth · (424) 314-0203
Dr. Tina Wang, M.D.
Pasadena, CA · $70 in drug and device payments (2025) · Telehealth · (424) 314-0177
Dr. Weber Chen, M.D.
Pasadena, CA · $6,268 in drug and device payments (2025) · Telehealth · (626) 288-0008
Dr. William Mcintyre, Jr., M.D.
Pasadena, CA · No drug or device payments recorded (2025) · (626) 304-4400
Dr. Thomas Stanton, M.D.
Petaluma, CA · No drug or device payments recorded (2025) · (707) 763-0600
Dr. Steven Turman, MD
Pinole, CA · No drug or device payments recorded (2025) · (510) 724-4111
Dr. Donna Saba, FNP
Pleasant Hill, CA · $26 in drug and device payments (2025) · (925) 687-2570
Dr. Esther Catalya, M.D.
Pleasant Hill, CA · $29 in drug and device payments (2025) · (925) 672-5041
Dr. Gigi Chen, M.D.
Pleasant Hill, CA · $17,261 in drug and device payments (2025) · Telehealth · (925) 677-5041
Dr. Jeffrey Zweig, MD
Pleasant Hill, CA · $75 in drug and device payments (2025) · (925) 677-5041
Dr. Leann Blankenship, M.D.
Pleasant Hill, CA · $4,641 in drug and device payments (2025) · Telehealth · (925) 687-2570
Dr. Matthew Sirott, M.D.
Pleasant Hill, CA · No drug or device payments recorded (2025) · (925) 677-5041
Dr. Miguel Cerejo, D.O.
Pleasant Hill, CA · $54 in drug and device payments (2025) · (925) 687-2570
Dr. Robert Robles, M.D.
Pleasant Hill, CA · $31 in drug and device payments (2025) · (925) 677-5041
Dr. Shoba Kankipati, M.D.
Pleasant Hill, CA · No drug or device payments recorded (2025) · (925) 687-2570
Dr. Tiffany Svahn, M.D.
Pleasant Hill, CA · $1,123 in drug and device payments (2025) · Telehealth · (925) 677-5041
Dr. Yelena Krupitskaya, M.D.
Pleasant Hill, CA · $2,709 in drug and device payments (2025) · Telehealth · (925) 677-5041
Dr. Preeti Chaudhary, M.D.
Pomona, CA · $10,258 in drug and device payments (2025) · Telehealth · (909) 630-7205
Dr. Swarna Chanduri, MD
Pomona, CA · $3,842 in drug and device payments (2025) · (909) 630-7205
Dr. Vandana Agarwal, MD
Pomona, CA · $5,151 in drug and device payments (2025) · Telehealth · (909) 620-5502
Dr. David Shin, M.D.
Porter Ranch, CA · $366 in drug and device payments (2025) · (818) 271-2500
Dr. Juan Alcantar, MD
Porter Ranch, CA · $31 in drug and device payments (2025) · Telehealth · (818) 271-2500
Dr. Kalpathy Venkatesan, MD
Porterville, CA · $106 in drug and device payments (2025) · (559) 788-2175
Dr. David Kim, M.D.
Port Ranch, CA · No drug or device payments recorded (2025) · Telehealth · (818) 271-2500
Dr. Ziad Khan, M.D.
Rancho Cucamonga, CA · $5,522 in drug and device payments (2025) · (909) 949-2242
Dr. Amy Law, M.D.
Rancho Mirage, CA · $5,107 in drug and device payments (2025) · Telehealth · (760) 568-3613
Dr. Asnakech Bayable, MD
Rancho Mirage, CA · $23 in drug and device payments (2025) · Telehealth · (760) 341-3688
Dr. Austin Kordic, MD
Rancho Mirage, CA · $391 in drug and device payments (2025) · (760) 346-7655
Dr. Chrystina Castellon, MD
Rancho Mirage, CA · $30 in drug and device payments (2025) · Telehealth · (760) 346-7655
Dr. Constantin Dasanu, M.D., PH.D.
Rancho Mirage, CA · No drug or device payments recorded (2025) · Telehealth · (760) 346-7655
Dr. David Young, M.D.
Rancho Mirage, CA · $252 in drug and device payments (2025) · (760) 568-3613
Dr. Davood Vafai, M.D.
Rancho Mirage, CA · $593 in drug and device payments (2025) · Telehealth · (760) 341-3688
Dr. Delshad Ahmad, MD
Rancho Mirage, CA · No drug or device payments recorded (2025) · Telehealth · (760) 346-7655
Dr. Henry Tsai, M.D.
Rancho Mirage, CA · $200 in drug and device payments (2025) · Telehealth · (760) 346-7655
Dr. Ira Felman, M.D.
Rancho Mirage, CA · $375 in drug and device payments (2025) · Telehealth · (760) 346-7655
Dr. Jian Chen, MD
Rancho Mirage, CA · $104 in drug and device payments (2025) · (760) 340-3911
Dr. Kota Shekar, MD
Rancho Mirage, CA · $782 in drug and device payments (2025) · (760) 346-7655
Dr. Luke Dreisbach, M.D.
Rancho Mirage, CA · $4,117 in drug and device payments (2025) · Telehealth · (760) 568-3613
Dr. Maria Popescu, MD
Rancho Mirage, CA · No drug or device payments recorded (2025) · (760) 346-7655
Dr. Mark Carmichael, MD
Rancho Mirage, CA · $5,877 in drug and device payments (2025) · Telehealth · (760) 568-3613
Dr. Naila Zahid
Rancho Mirage, CA · No drug or device payments recorded (2025) · (562) 905-1618
Dr. Philip Dreisbach, M.D.
Rancho Mirage, CA · $3,106 in drug and device payments (2025) · Telehealth · (760) 568-3613
Dr. Thomas Schulz, MD
Rancho Mirage, CA · No drug or device payments recorded (2025) · Telehealth · (760) 346-7655
Dr. Tyler Davis, M.D.
Rancho Mirage, CA · $3,654 in drug and device payments (2025) · Telehealth · (760) 568-3613
Dr. Christine White, M.D.
Rancho Santa Fe, CA · No drug or device payments recorded (2025) · (858) 405-7825
Dr. Dyanesh Bapu Ravindran, M.D
Redding, CA · $5,199 in drug and device payments (2025) · (530) 245-2900
Dr. Jed Freeman, M.D.
Redding, CA · $408 in drug and device payments (2025) · (530) 242-8822
Dr. Promila Dhanuka, M.D.
Redding, CA · $970 in drug and device payments (2025) · (530) 247-1425
Dr. Shirish Mahajan, MD
Redding, CA · No drug or device payments recorded (2025) · (530) 244-2223

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.