Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nancy Ann Duncan, AU.D.

Audiologist in Fall River, MA · enumerated 2005 · practices at Duncan Hearing Healthcare Inc.

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

National Provider Identifier

1457344608

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Registry record

Entity type Individual (Type 1)

Name Dr. Nancy Ann Duncan

Credential AU.D.

Sex Female

Practice address 1822 N Main St Ste 201, Fall River, MA, 02720

Phone (508) 674-3334

Fax (508) 674-5855

Enumeration date Aug 23, 2005

Last updated in NPPES Nov 18, 2024

Taxonomy & licenses

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License AUD637 (MA) Secondary

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AUD637 (MA) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential

Other identifiers

Identifier	Type	State	Issuer
29506-6	Other	RI	BLUE CROSS BLUE SHIELD
AD0167	Other	MA	BLUE CROSS BLUE SHIELD
467290	Other	MA	TUFTS
5103169	Medicaid	MA	-
512550	Other	RI	BLUECHIP

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.

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Frequently asked questions

What specialty is Nancy Duncan?

Nancy Duncan is registered in NPPES with the primary taxonomy of Audiologist. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-18.