Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Judy Lynne Duncan, LCSW

Clinical Social Worker in Nutley, NJ · enumerated 2014 · practices at Judy L. Duncan, Lcsw LLC.

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

National Provider Identifier

1114331386

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Registry record

Entity type Individual (Type 1)

Name Ms. Judy Lynne Duncan

Credential LCSW

Sex Female

Practice address Nutley, NJ, 07110

Phone (973) 202-3261

Enumeration date Jun 16, 2014

Last updated in NPPES Mar 13, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License R026110-1 (NY) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 44SC00191300 (NJ) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 Judy Duncan?

Judy Duncan is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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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Judy L. Duncan, Lcsw LLC Clinical Social Worker · Nutley, NJ NPI 1295682631

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-13.