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

MS. MARCIA L WILLIAMS LPC
NPI 1467569335
Counselor in Brookfield, WI

Q: What is Marcia Williams's NPI number?

The NPI number for Marcia Williams is 1467569335. It was assigned to this individual provider in the NPPES registry on August 24, 2006.

Q: What is Marcia Williams's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Q: Is Marcia Williams enrolled in Medicare?

No. Marcia Williams has opted out of Medicare through February 12, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for Marcia Williams was last updated on September 9, 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.

Active since August 24, 2006Opted out of Medicare · through Feb 12, 2028

500 S ELM GROVE RD, BROOKFIELD, WI 53005(262) 641-4347(262) 641-4350 Get Directions Write a Review

NPPES record last updated: September 9, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

On this page

About Ms. Marcia L Williams Lpc NPPES

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

MS. MARCIA L WILLIAMS LPC (NPI 1467569335) is an individual counselor in Brookfield, Wisconsin, licensed in Wisconsin (3375-125) and active in the NPI registry since August 2006. She has opted out of Medicare through February 12, 2028.

NPPES Registry Identity

NPI1467569335

Entity TypeIndividualFemale

Primary Taxonomy101Y00000X

Provider Legal NameMS. MARCIA L WILLIAMSCredential: LPC

Location Address500 S ELM GROVE RDBrookfield, WI 53005-6524

Mailing Address3301 W Forest Home AveMilwaukee, WI 53215-2843 · (414) 647-6326 · Fax (414) 671-8860

Phone(262) 641-4347

Fax(262) 641-4350

Sole ProprietorNo

Enumeration DateAugust 24, 2006

Last NPPES UpdateSeptember 9, 2026

NPPES CertifiedSeptember 9, 2026

✔ NPI 1467569335 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers

Taxonomy Code101Y00000X

Licenses✔ Licensed in WI · 3375-125✔ Licensed in WI · 42235-030

Definition

A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

500 S ELM GROVE RD, Brookfield, WI 53005

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), Medica and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

Ms. Marcia L Williams Lpc 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 February 12, 2024 through February 12, 2028.

Opt-Out Effective DateFebruary 12, 2024

Opt-Out In Effect ThroughFebruary 12, 2028Opt-out affidavits renew automatically every two years unless cancelled

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 Marcia Williams's NPI number?

The NPI number for Marcia Williams is 1467569335. It was assigned to this individual provider in the NPPES registry on August 24, 2006.

Where is Marcia Williams located?

Marcia Williams practices at 500 S Elm Grove Rd, Brookfield, WI 53005. The listed phone number is (262) 641-4347.

What is Marcia Williams's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Is Marcia Williams enrolled in Medicare?

No. Marcia Williams has opted out of Medicare through February 12, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

What insurance does Marcia Williams accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), Medica, Providence Health Plan and Quartz and 1 other insurer list Marcia Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Marcia Williams was last updated on September 9, 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.