Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Donna C Duncan, FNP

Family Nurse Practitioner in Baton Rouge, LA · enumerated 2008 · practices at Martello Chiropractic LLC.

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

National Provider Identifier

1437317302

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Registry record

Entity type Individual (Type 1)

Name Donna C Duncan

Credential FNP

Sex Female

Practice address 1962 Oneal Ln, Ste H-1, Baton Rouge, LA, 70816

Phone (225) 755-0095

Enumeration date May 28, 2008

Last updated in NPPES Dec 14, 2009

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP05478 (LA) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
1808148	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

What specialty is Donna Duncan?

Donna Duncan is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Martello Chiropractic LLC Chiropractor · Baton Rouge, LA NPI 1699989129

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-14.