NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greenbelt Radiation Oncology Center

Radiation Oncology Clinic/Center in Greenbelt, MD · enumerated 2023 · authorized official Vladimir Ioffe, Medical Director.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669245999

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Greenbelt Radiation Oncology Center
Practice address 7503 Greenway Center Dr, Greenbelt, MD, 20770
Phone (301) 446-3540
Fax (301) 446-3543
Enumeration date Oct 30, 2023
Last updated in NPPES Oct 30, 2023

Taxonomy & classification

261QX0203X Radiation Oncology Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Vladimir Ioffe
Title Medical Director
Phone (301) 446-3540

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Greenbelt Radiation Oncology Center?
NPPES lists Vladimir Ioffe (Medical Director) as the authorized official for this organization.
What is the NPI number for Greenbelt Radiation Oncology Center?
The NPI for Greenbelt Radiation Oncology Center is 1669245999, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-30.