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MRS. STEPHANIE DIANE WILLIAMS MSW
NPI 1417168113
Social Worker - Clinical in Creve Coeur, MO

Active since May 24, 2007Opted out of Medicare · through Jul 1, 2028
1000 EXECUTIVE PARKWAY DR STE 106, CREVE COEUR, MO 63141(314) 329-7107 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 12, 2025, Sep 16, 2019 (2 updates tracked since 2019).

About Mrs. Stephanie Diane Williams Msw NPPES

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

MRS. STEPHANIE DIANE WILLIAMS MSW (NPI 1417168113) is an individual clinical provider in Creve Coeur, Missouri, licensed in Missouri (2004024500) and active in the NPI registry since May 2007. She has opted out of Medicare through July 1, 2028.

NPPES Registry Identity

NPI1417168113
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. STEPHANIE DIANE WILLIAMSCredential: MSW
Location Address1000 EXECUTIVE PARKWAY DR STE 106Creve Coeur, MO 63141-6369
Mailing Address1000 Executive Parkway Dr Ste 106Creve Coeur, MO 63141-6369 · (314) 329-7107
Phone(314) 329-7107
Sole ProprietorYes
Enumeration DateMay 24, 2007
Last NPPES UpdateNovember 12, 20252 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
✔ NPI 1417168113 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 MO · 2004024500
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.
1000 EXECUTIVE PARKWAY DR STE 106, Creve Coeur, MO 63141
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Mrs. Stephanie Diane Williams Msw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from July 1, 2026 through July 1, 2028.

Opt-Out Effective DateJuly 1, 2026
Opt-Out In Effect ThroughJuly 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ZACHARY PIERCE CARSON
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
SAINT LOUIS, MO 63141
St. Louis County (314) 469-5522
ERIN KARANDISH M.D.
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
SAINT LOUIS, MO 63141
St. Louis County (314) 289-6434
STERLING WEBSTER PLPC
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
CREVE COEUR, MO 63141
St. Louis County (314) 887-7612
MRS. MARY E COLIZZA MAC, PLPC
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
SAINT LOUIS, MO 63141
St. Louis County (314) 469-5522
AARON BENJAMIN BITZER
Counselor (Mental Health)
1000 EXECUTIVE PARKWAY DR STE 106
CREVE COEUR, MO 63141
St. Louis County (619) 535-1951
CLAIRE WELTON
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
SAINT LOUIS, MO 63141
St. Louis County (314) 469-5522
ABIGAIL MATHER MS, NCC, LPC
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
CREVE COEUR, MO 63141
St. Louis County (314) 469-5522
CROSSROADS CHRISTIAN COUNSELING
Counselor (Professional)
1000 EXECUTIVE PARKWAY DR STE 106
SAINT LOUIS, MO 63141
St. Louis County (314) 469-5522

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 Stephanie Williams's NPI number?

The NPI number for Stephanie Williams is 1417168113. It was assigned to this individual provider in the NPPES registry on May 24, 2007.

Where is Stephanie Williams located?

Stephanie Williams practices at 1000 Executive Parkway Dr Ste 106, Creve Coeur, MO 63141. The listed phone number is (314) 329-7107.

What is Stephanie Williams's specialty?

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

Is Stephanie Williams enrolled in Medicare?

No. Stephanie Williams has opted out of Medicare through July 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Stephanie Williams was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.