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Hematology & Oncology in Denver, Colorado

Data updated monthly · Last refresh September 2026

57 Hematology & Oncology providers practice in Denver, and 58% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Hematology & Oncology providers in Denver

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. Sonia Okuyama Sasaki, MD
Denver, CO · $163 in drug and device payments (2025) · Telehealth · (303) 602-6062
Dr. Susan Freeman, MD
Denver, CO · No drug or device payments recorded (2025) · (303) 715-7030
Dr. Tara Gregory, M.D.
Denver, CO · $12,492 in drug and device payments (2025) · Telehealth · (720) 754-4800
Dr. Vignesh Narayanan, M.D
Denver, CO · $146 in drug and device payments (2025) · Telehealth · (720) 516-9413
Dr. Wendy Nekritz, M.D.
Denver, CO · No drug or device payments recorded (2025) · (303) 778-5714
Dr. William Lee, M.D.
Denver, CO · $892 in drug and device payments (2025) · (303) 388-4461
Dr. Yousuf Gaffar, MD
Denver, CO · $8,774 in drug and device payments (2025) · Telehealth · (303) 715-7030

Conditions Hematology & Oncology providers in Denver, Colorado 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 Denver, Colorado?

There are 57 Hematology & Oncology providers with active NPI records practicing in Denver, according to federal NPPES data refreshed monthly.

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

33 of 57 (58%) 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 Denver treat?

Hematology & Oncology providers in Denver 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 Denver Hematology & Oncology across Colorado

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.