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Hematology & Oncology in Washington, Washington DC

Data updated monthly · Last refresh September 2026

80 Hematology & Oncology providers practice in Washington, and 54% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Hematology & Oncology providers in Washington

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. Mounika Gangireddy
Washington, DC · $75 in drug and device payments (2025) · Telehealth · (202) 877-4677
Dr. Mukhtar Hassan, MD
Washington, DC · No drug or device payments recorded (2025) · (202) 865-6625
Dr. Nadia Ashai, MD
Washington, DC · $3,891 in drug and device payments (2025) · Telehealth · (202) 444-2223
Dr. Nancy Scher, M.D.
Washington, DC · No drug or device payments recorded (2025) · (202) 745-8134
Dr. Natasha Jain, M.B.B.S
Washington, DC · $456 in drug and device payments (2025) · Telehealth · (202) 877-8271
Dr. Neil Shah, M.D.
Washington, DC · $20,606 in drug and device payments (2025) · Telehealth · (202) 444-0198
Dr. Nicole Laslett, DO
Washington, DC · No drug or device payments recorded (2025) · Telehealth · (202) 537-4000
Dr. Pamela Seam, M.D.
Washington, DC · No drug or device payments recorded (2025) · (202) 346-3700
Dr. Patricia Oneal, MD
Washington, DC · No drug or device payments recorded (2025) · (202) 865-6625
Dr. Paul Leger, M.D.
Washington, DC · $961 in drug and device payments (2025) · Telehealth · (202) 444-2223
Dr. Pavani Chalasani, M.D
Washington, DC · $7,805 in drug and device payments (2025) · (202) 741-2277
Dr. Pia Herbolsheimer, MD
Washington, DC · No drug or device payments recorded (2025) · (202) 877-7000
Dr. Piyapong Vongkovit, MD
Washington, DC · No drug or device payments recorded (2025) · Telehealth · (202) 346-3700
Dr. Prashanth Ashok Kumar
Washington, DC · $208 in drug and device payments (2025) · Telehealth · (202) 677-6903
Dr. Puja Arora, M.D.
Washington, DC · $2,683 in drug and device payments (2025) · Telehealth · (202) 877-8278
Dr. Ravi Madan, M.D.
Washington, DC · $166 in drug and device payments (2025) · (973) 722-4058
Dr. Ravi Sarma, M.D.
Washington, DC · $5,829 in drug and device payments (2025) · Telehealth · (202) 865-6625
Dr. Reetu Mukherji, M.D.
Washington, DC · $13,831 in drug and device payments (2025) · Telehealth · (202) 444-2223
Dr. Robert Siegel, M.D.
Washington, DC · $1,436 in drug and device payments (2025) · (202) 741-3333
Dr. Robert Warren
Washington, DC · No drug or device payments recorded (2025) · (202) 444-2223
Dr. Samah Nassereddine, M.D
Washington, DC · $438 in drug and device payments (2025) · Telehealth · (202) 741-3000
Dr. Sara Horton, MD
Washington, DC · $142 in drug and device payments (2025) · (202) 269-7000
Dr. Sarah Sewaralthahab
Washington, DC · No drug or device payments recorded (2025) · (202) 877-2824
Dr. Sarah Waheed, MD
Washington, DC · No drug or device payments recorded (2025) · Telehealth · (202) 660-6500
Dr. Sonal Paul
Washington, DC · $1,931 in drug and device payments (2025) · (202) 741-2210
Dr. Sunil Adige, M.D.
Washington, DC · No drug or device payments recorded (2025) · (202) 741-2210
Dr. Susan Honig, M.D.
Washington, DC · No drug or device payments recorded (2025) · (202) 444-0848
Dr. Suthee Rapisuwon, M.D.
Washington, DC · $5,336 in drug and device payments (2025) · Telehealth · (202) 687-8901
Dr. Ujjwal Karki
Washington, DC · $174 in drug and device payments (2025) · (202) 444-1649
Dr. Vered Stearns, M.D.
Washington, DC · $19,936 in drug and device payments (2025) · Telehealth · (202) 537-4686

Conditions Hematology & Oncology providers in Washington, Washington DC 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 Washington, Washington DC?

There are 80 Hematology & Oncology providers with active NPI records practicing in Washington, according to federal NPPES data refreshed monthly.

How many Hematology & Oncology providers in Washington received drug or device company payments?

43 of 80 (54%) 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 Washington treat?

Hematology & Oncology providers in Washington 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 Washington Hematology & Oncology across Washington DC

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.