Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. NANCY LYNN WILLIAMS LCSW
NPI 1174766703
Social Worker - Clinical in Montclair, NJ

Active since April 13, 2009
685 GROVE ST, MONTCLAIR, NJ 07043(973) 943-0522 Get Directions Write a Review

NPPES record last updated: August 19, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Ms. Nancy Lynn Williams Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. NANCY LYNN WILLIAMS LCSW (NPI 1174766703) is an individual clinical provider in Montclair, New Jersey, licensed in New Jersey (44SC05237200) and active in the NPI registry since April 2009.

NPPES Registry Identity

NPI1174766703
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. NANCY LYNN WILLIAMSCredential: LCSW
Location Address685 GROVE STMontclair, NJ 07043-2018
Mailing Address685 Grove StMontclair, NJ 07043-2018 · (973) 943-0522
Sole ProprietorYes
Enumeration DateApril 13, 2009
Last NPPES UpdateAugust 19, 2026
NPPES CertifiedAugust 19, 2026
NPI 1174766703 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License Licensed in NJ · 44SC05237200
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
685 GROVE ST, Montclair, NJ 07043

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nancy Williams's NPI number?

The NPI number for Nancy Williams is 1174766703. It was assigned to this individual provider in the NPPES registry on April 13, 2009.

Where is Nancy Williams located?

Nancy Williams practices at 685 Grove St, Montclair, NJ 07043. The listed phone number is (973) 943-0522.

What is Nancy Williams's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Nancy Williams was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.