Radiation Oncologists in Washington DC
Data updated monthly · Last refresh October 2026
26 Radiation Oncology providers practice in Washington DC, including 10 (38%) offering telehealth. The largest concentration is in Washington. 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.
26providers
10telehealth
Washingtontop city
Where Radiation Oncologists in Washington DC practice
From CMS Medicare enrollment records covering 12 of the 26 providers listed here (46%). Providers who do not bill Medicare are not included in these figures.
0%solo or small practice (under 10 clinicians)
0%mid-size group (10 to 99)
100%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Radiation Oncologists | All clinicians in group | Main city |
| Medstar Medical Group II LLC | 5 | 3,726 | Washington |
| Johns Hopkins University | 5 | 711 | Washington |
| Johns Hopkins University | 4 | 2,886 | Washington |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Radiation Oncologists affiliated |
| Sibley Memorial Hospital | Washington | Nonprofit | 5 of 5 | 6 |
| Medstar Washington Hospital Center | Washington | Nonprofit | 3 of 5 | 5 |
| Medstar Georgetown University Hospital | Washington | For-profit | 3 of 5 | 3 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Radiation Oncology providers in Washington DC
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. Adedamola Omogbehin, MDWashington, DC · $46 in drug and device payments (2025) ·
(202) 877-3925 Dr. Aditya Halthore, MDWashington, DC · No drug or device payments recorded (2025) · Telehealth ·
(202) 816-6254 Dr. Anatoly Dritschilo, M.D.Washington, DC · No drug or device payments recorded (2025) ·
(202) 444-3320 Dr. Brandi Page, M.D.Washington, DC · No drug or device payments recorded (2025) · Telehealth ·
(202) 537-4787 Dr. Brian CollinsWashington, DC · $357 in drug and device payments (2025) · Telehealth ·
(202) 444-3320 Dr. Carmen Kut, MD PHDWashington, DC · No drug or device payments recorded (2025) · Telehealth ·
(202) 537-4788 Dr. Christina Tsien, MDWashington, DC · $5,189 in drug and device payments (2025) ·
(314) 747-7236 Dr. Ebrahim Ashayeri, MDWashington, DC · No drug or device payments recorded (2025) ·
(202) 865-1421 Dr. Jean Wright, MDWashington, DC · No drug or device payments recorded (2025) ·
(202) 537-4788 Dr. Jill Remick, MDWashington, DC · $421 in drug and device payments (2025) ·
(202) 715-4000 Dr. Joann Collier-manningWashington, DC · No drug or device payments recorded (2025) ·
(202) 745-8314 Dr. Jonathan Lischalk, M.D.Washington, DC · $25,523 in drug and device payments (2025) · Telehealth ·
(202) 444-3320 Dr. Keith Unger, MDWashington, DC · $848 in drug and device payments (2025) · Telehealth ·
(202) 444-2600 Dr. Martin Ojong-ntui, M.D.Washington, DC · $346 in drug and device payments (2025) ·
(202) 715-5120 Dr. Matthew Forsthoefel, M.D.Washington, DC · $590 in drug and device payments (2025) ·
(202) 741-3000 Dr. Mihoko Fujita, MDWashington, DC · No drug or device payments recorded (2025) ·
(202) 865-1421 Dr. Nam Nguyen, M.D.Washington, DC · $67 in drug and device payments (2025) ·
(202) 865-1421 Dr. Nitika PaudelWashington, DC · No drug or device payments recorded (2025) · Telehealth ·
(312) 926-2600 Dr. Pamela Randolph Jackson, MDWashington, DC · $81 in drug and device payments (2025) ·
(800) 353-0788 Dr. Rachit Kumar, MDWashington, DC · $17 in drug and device payments (2025) · Telehealth ·
(202) 537-4787 Dr. Robert White, MDWashington, DC · No drug or device payments recorded (2025) ·
(202) 877-3925 Dr. Sana Dastgheyb, MD, PHDWashington, DC · No drug or device payments recorded (2025) ·
(202) 745-8000 Dr. Sean CollinsWashington, DC · $102,699 in drug and device payments (2025) · Telehealth ·
(202) 444-3320 Dr. Sherif Shaaban, MDWashington, DC · No drug or device payments recorded (2025) ·
(202) 537-2000 Dr. Sophia Rizvi, MDWashington, DC · No drug or device payments recorded (2025) ·
(202) 444-2000 Dr. Victoria Croog, M.D.Washington, DC · No drug or device payments recorded (2025) · Telehealth ·
(202) 537-4787 Common questions
How many Radiation Oncology providers are in Washington DC?There are 26 Radiation Oncology providers with active NPI records practicing in Washington DC, according to federal NPPES data refreshed monthly.
Do Radiation Oncology providers in Washington DC offer telehealth?Yes. 10 of the 26 Radiation Oncology providers in Washington DC (about 38%) report offering telehealth services in CMS data.
Which cities in Washington DC have the most Radiation Oncology providers?Washington (26) have the highest concentration of Radiation Oncology providers in Washington DC.
How many Radiation Oncology providers in Washington DC received drug or device company payments?12 of 26 Radiation Oncology providers in Washington DC (46%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
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 Radiation Oncologists in Washington DC work in independent practices or large health systems?Among 12 Radiation Oncologists in Washington DC enrolled in Medicare, 0% bill through a solo or small practice with fewer than 10 clinicians, 0% through a mid-size group of 10 to 99, and 100% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Radiation Oncologists in Washington DC work at?According to CMS facility affiliation records, the Washington DC hospitals where the most Radiation Oncologists hold privileges are Sibley Memorial Hospital in Washington; Medstar Washington Hospital Center in Washington; Medstar Georgetown University Hospital in Washington.
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