Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Caroline Duncan, MD

Cardiovascular Disease Physician in New Orleans, LA · enumerated 2006.

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

National Provider Identifier

1679596597

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Registry record

Entity type Individual (Type 1)

Name Margaret Caroline Duncan

Credential MD

Sex Female

Practice address Children'S Hospital - Neurology, 200 Henry Clay Avenue, New Orleans, LA, 70118

Phone (504) 896-9458

Enumeration date Jul 25, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License C5032 (LA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1060551	Medicaid	LA	-

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

Where does Margaret Duncan practice?

The practice location on file with NPPES is in New Orleans, LA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Margaret Duncan?

The National Provider Identifier (NPI) for Margaret Duncan is 1679596597, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Ann Henderson Neurology with Special Qualifications in Child Neurology Physician · New Orleans, LA NPI 1760405609

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.