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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. Tariq Mahmood, M.D.
Orange, CA · $5,321 in drug and device payments (2025) · Telehealth · (714) 541-6622
Dr. Tiberio Lindgren, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 835-1800
Dr. Timothy Byun, MD
Orange, CA · $5,583 in drug and device payments (2025) · Telehealth · (714) 835-1800
Dr. Tiong S Ong, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Warren Chow, MD
Orange, CA · $531 in drug and device payments (2025) · Telehealth · (714) 456-5153
Dr. Xinyu Nan, M.D.
Orange, CA · $8,451 in drug and device payments (2025) · Telehealth · (714) 541-6622
Dr. Zahra Sadat Hamedi, MD
Orange, CA · $308 in drug and device payments (2025) · Telehealth · (714) 456-7890
Dr. Zhaohui Arter, MD
Orange, CA · $15,603 in drug and device payments (2025) · Telehealth · (714) 456-5670
Dr. Edna Salinas, MD, PH.D.
Oroville, CA · No drug or device payments recorded (2025) · (530) 532-8180
Dr. Martin Majer, M.D.
Oroville, CA · $3,271 in drug and device payments (2025) · Telehealth · (530) 538-3187
Dr. Richard Smith, MD
Oroville, CA · No drug or device payments recorded (2025) · (530) 533-6061
Dr. Sudeep Ghuman, MD
Oroville, CA · $2,405 in drug and device payments (2025) · Telehealth · (530) 532-8180
Dr. Chirag Dalsania, M.D.
Oxnard, CA · $2,077 in drug and device payments (2025) · Telehealth · (805) 485-8709
Dr. Fariborz Mortazavi, M.D.
Oxnard, CA · $3,287 in drug and device payments (2025) · Telehealth · (805) 485-8709
Dr. Kevin Chang, MD
Oxnard, CA · $5,040 in drug and device payments (2025) · Telehealth · (805) 485-8709
Dr. Kooros Parsa, MD
Oxnard, CA · $17 in drug and device payments (2025) · (805) 485-8709
Dr. Rosemary Mcintyre, MD
Oxnard, CA · No drug or device payments recorded (2025) · (805) 485-8709
Dr. Sadanand Patil, M.D.
Oxnard, CA · $2,591 in drug and device payments (2025) · (805) 988-7080
Dr. Todd Yates, D.O.
Oxnard, CA · $2,312 in drug and device payments (2025) · Telehealth · (805) 485-8709
Dr. Warner Peng, MD
Oxnard, CA · $4,749 in drug and device payments (2025) · Telehealth · (805) 485-7232
Dr. Marilou Terpenning, M.D.
Pacific Palisades, CA · No drug or device payments recorded (2025) · (310) 995-3758
Dr. Mukund Shah, M.D.
Palmdale, CA · $383 in drug and device payments (2025) · (661) 948-5928
Dr. Neeraj Agnihotri, MD
Palmdale, CA · $227 in drug and device payments (2025) · Telehealth · (661) 948-5928
Dr. Ronald Miller, M.D.
Palmdale, CA · $431 in drug and device payments (2025) · (661) 948-5928
Dr. Elber Camacho, MD
Palm Springs, CA · $1,517 in drug and device payments (2025) · (760) 416-4880
Dr. Glen Morehead, M.D.
Palm Springs, CA · $2,138 in drug and device payments (2025) · (760) 416-4800
Dr. Terrence Chew, MD
Palm Springs, CA · No drug or device payments recorded (2025) · (858) 720-0647
Dr. Alexander Salter, MD, PHD
Palo Alto, CA · No drug or device payments recorded (2025) · (650) 497-8000
Dr. Alison Chang, MD
Palo Alto, CA · $218 in drug and device payments (2025) · Telehealth · (650) 853-2905
Dr. Benjamin Kim, M.D., M.PHIL.
Palo Alto, CA · No drug or device payments recorded (2025) · (650) 497-8000
Dr. Bernard Fine, MD PHD
Palo Alto, CA · $135 in drug and device payments (2025) · (650) 493-5000
Dr. Eric Lau, D.O.
Palo Alto, CA · $301 in drug and device payments (2025) · Telehealth · (650) 853-2905
Dr. Maya White, M.D.
Palo Alto, CA · No drug or device payments recorded (2025) · (650) 498-6000
Dr. Roozbeh Mohajer, MD
Palo Alto, CA · $603 in drug and device payments (2025) · Telehealth · (650) 853-2905
Dr. William Novotny, M.D.
Palo Alto, CA · No drug or device payments recorded (2025) · (650) 493-5000
Dr. Fred Rarick, M.D.
Palos Verdes Estates, CA · No drug or device payments recorded (2025) · (310) 377-2821
Dr. Anuradha Pakanati, MD
Panorama City, CA · No drug or device payments recorded (2025) · Telehealth · (818) 375-2000
Dr. Brian Shin, MD
Panorama City, CA · $47 in drug and device payments (2025) · (818) 375-2000
Dr. Helen Kang, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Miguel Medina, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Solomon Jo, M.D.
Panorama City, CA · No drug or device payments recorded (2025) · (818) 815-5000
Dr. Swaminathan Ramanathan, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Sylvia Fowler, MD
Panorama City, CA · No drug or device payments recorded (2025) · (818) 375-2000
Dr. Ted Heckman, MD
Paradise, CA · No drug or device payments recorded (2025) · (530) 876-3141
Dr. Cynthia Martel, M.D.
Pasadena, CA · $4,073 in drug and device payments (2025) · (626) 831-8922
Dr. Helen Moon, M.D.
Pasadena, CA · $13,129 in drug and device payments (2025) · (951) 353-4931
Dr. Karen Haiber, MD
Pasadena, CA · $137 in drug and device payments (2025) · Telehealth · (626) 568-1622
Dr. Mark Mcnamara, M.D.
Pasadena, CA · $26 in drug and device payments (2025) · (626) 568-1622
Dr. Ronald Tang, DO
Pasadena, CA · $7,064 in drug and device payments (2025) · Telehealth · (626) 288-0008
Dr. Stephen Huang, M.D.
Pasadena, CA · $4,510 in drug and device payments (2025) · Telehealth · (626) 568-1622

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.