Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Madison Diagnostic Group LLC

Diagnostic Radiology Physician in Washington, DC · enumerated 2025 · authorized official Stefanie Jones, Office Manager.

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

National Provider Identifier

1225823701

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Madison Diagnostic Group LLC

Practice address 1775 Eye St Nw, Washington, DC, 20006

Phone (202) 851-5470

Enumeration date Apr 14, 2025

Last updated in NPPES Apr 14, 2025

Taxonomy & classification

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Stefanie Jones

Title Office Manager

Phone (202) 851-5470

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-04-14. Verify at npiregistry.cms.hhs.gov.

Where is Madison Diagnostic Group LLC located?

The practice location on file with NPPES is in Washington, DC.

Providers at this address

Browse all →

David Jennette Surgical Assistant · Washington, DC NPI 1548232887 Joneis Thomas Clinical Psychologist · Washington, DC NPI 1487082152 St. Helen'S Homes Inc. In Home Supportive Care Agency · Washington, DC NPI 1043667132

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-14.