Hematology & Oncology in Downey, California
Data updated monthly · Last refresh September 2026
14 Hematology & Oncology providers practice in Downey. Listings are drawn from federal public records and are not endorsements.
Hematology & Oncology providers in Downey
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. Amitabha Mazumder, M.D.Downey, CA · $6,517 in drug and device payments (2025) · Telehealth ·
(562) 869-1201 Dr. Balaganesh Gopurala, MDDowney, CA · $2,731 in drug and device payments (2025) ·
(562) 869-1201 Dr. Brian Chun Fang Cheng, M.D.Downey, CA · $2,519 in drug and device payments (2025) · Telehealth ·
(562) 904-4480 Dr. Catherine LyDowney, CA · No drug or device payments recorded (2025) ·
(714) 456-5413 Dr. Chaiyaporn Boonchalermvichian, MD Dr. Eddie Thara, D.O.Downey, CA · $5,786 in drug and device payments (2025) · Telehealth ·
(562) 869-1201 Dr. Haydee Gonzalez Hidalgo, MDDowney, CA · No drug or device payments recorded (2025) ·
(562) 869-1201 Dr. Mauro Janoski, MDDowney, CA · No drug or device payments recorded (2025) · Telehealth ·
(562) 869-1201 Dr. Nelly Awkar Lazo, M.DDowney, CA · $2,903 in drug and device payments (2025) · Telehealth ·
(562) 869-1201 Dr. Ram Muthialu, MDDowney, CA · No drug or device payments recorded (2025) ·
(562) 862-5177 Dr. Richy Agajanian, M.D.Downey, CA · No drug or device payments recorded (2025) ·
(562) 869-1201 Dr. Soo Chung, M.D.Downey, CA · No drug or device payments recorded (2025) ·
(562) 869-1201 Dr. Yunfei Wei, MDDowney, CA · $3,678 in drug and device payments (2025) · Telehealth ·
(562) 869-1201 Conditions Hematology & Oncology providers in Downey, 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.
- Breast cancer
- Lung cancer
- Lymphoma
- Leukemia
- Anemia
- Blood disorders
Common questions
How many Hematology & Oncology providers are in Downey, California?There are 14 Hematology & Oncology providers with active NPI records practicing in Downey, according to federal NPPES data refreshed monthly.
What conditions do Hematology & Oncology providers in Downey treat?Hematology & Oncology providers in Downey 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 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 Downey Hematology & Oncology across California
