IndividualActive
John Marshall
NPI 1316935844 · Hematology & Oncology Physician · Washington, DC
Provider details
- NPI number
- 1316935844
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 19655 (DC)
Practice location
3800 Reservoir Rd Nw
Washington, DC 20007-2113
Phone: (202) 444-2223
Mailing address
Po Box 418283
Boston, MA 02241-8283
Registry dates
- Enumerated
- 2005-10-10
- Last updated
- 2012-03-09
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.