Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mary C Dupont MD PC

Specialist in Chevy Chase, MD · enumerated 2006 · authorized official John Dupont, Practice Administrator.

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

National Provider Identifier

1558394221

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Registry record

Entity type Organization (Type 2)

Legal business name Mary C Dupont MD PC

Other name <Unavail>

Practice address 5530 Wisconsin Ave, Ste 1510, Chevy Chase, MD, 20815

Phone (301) 654-5530

Fax (301) 654-5540

Enumeration date Jul 8, 2006

Last updated in NPPES Nov 6, 2013

Taxonomy & classification

174400000X Specialist Other Service Providers · License D0052162 (MD) Primary

Authorized official

Name John Dupont

Title Practice Administrator

Phone (301) 654-5530

Other identifiers

Identifier	Type	State	Issuer
340017912	Other	-	RR MEDICARE

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 2013-11-06. Verify at npiregistry.cms.hhs.gov.

Where is Mary C Dupont MD PC located?

The practice location on file with NPPES is in Chevy Chase, MD.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-06.