Hematology & Oncology in Oklahoma City, Oklahoma
Data updated monthly · Last refresh September 2026
68 Hematology & Oncology providers practice in Oklahoma City, and 71% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Hematology & Oncology providers in Oklahoma City
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. Richard Bottomley, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 631-0919 Dr. Robert Epstein, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-8299 Dr. Robert Reynolds, MDOklahoma City, OK · $3,054 in drug and device payments (2025) · Telehealth ·
(405) 752-0871 Dr. Romeo Mandanas, M.D.Oklahoma City, OK · $4,063 in drug and device payments (2025) ·
(405) 773-6400 Dr. Ryan Nipp, M.D.Oklahoma City, OK · $43 in drug and device payments (2025) · Telehealth ·
(405) 271-4022 Dr. Saadia Chohan, MDOklahoma City, OK · $3,459 in drug and device payments (2025) ·
(405) 942-9200 Dr. Sakher Abdullah, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-8299 Dr. Samer Hassan, M.D.Oklahoma City, OK · $279 in drug and device payments (2025) ·
(405) 631-0919 Dr. Sami Ibrahimi, M.D.Oklahoma City, OK · $18,691 in drug and device payments (2025) ·
(405) 271-4022 Dr. Sonia Varghese, MDOklahoma City, OK · $71 in drug and device payments (2025) · Telehealth ·
(405) 751-4343 Dr. Taha Al-juhaishi, M.D.Oklahoma City, OK · $21,315 in drug and device payments (2025) · Telehealth ·
(405) 271-4022 Dr. Thy Nguyen, M.D.Oklahoma City, OK · $69 in drug and device payments (2025) ·
(405) 228-7100 Dr. Unaiza Zaman, MDOklahoma City, OK · $66 in drug and device payments (2025) ·
(405) 271-4022 Dr. Veena GujjuOklahoma City, OK · $26 in drug and device payments (2025) ·
(405) 271-5963 Dr. Vikki Canfield, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 751-4343 Dr. Vishnu Nagalapuram, MBBSOklahoma City, OK · No drug or device payments recorded (2025) · Telehealth ·
(405) 271-4022 Dr. Wajeeha Razaq, MDOklahoma City, OK · $1,052 in drug and device payments (2025) ·
(405) 271-4022 Dr. Zimu Gong, MDOklahoma City, OK · $156 in drug and device payments (2025) ·
(405) 271-8299 Conditions Hematology & Oncology providers in Oklahoma City, Oklahoma 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 Oklahoma City, Oklahoma?There are 68 Hematology & Oncology providers with active NPI records practicing in Oklahoma City, according to federal NPPES data refreshed monthly.
How many Hematology & Oncology providers in Oklahoma City received drug or device company payments?48 of 68 (71%) 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 Oklahoma City treat?Hematology & Oncology providers in Oklahoma City 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 Oklahoma City Hematology & Oncology across Oklahoma
