NPI Portal NPI Lookup & Verification

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

Miss Cermillia Lavone Williams, MBA, MSW

Clinical Social Worker in Mesa, AZ · enumerated 2018.

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

National Provider Identifier

1659857316

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Registry record

Entity type Individual (Type 1)
Name Miss Cermillia Lavone Williams
Credential MBA, MSW
Sex Female
Practice address Mesa, AZ, 85202
Phone (314) 494-7603
Enumeration date Jul 16, 2018
Last updated in NPPES Mar 10, 2026

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

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LMSW-0800 (AZ) Primary
175T00000X Peer Specialist Other Service Providers Secondary
171M00000X Case Manager/Care Coordinator Other Service Providers Secondary
101YP2500X Professional Counselor Behavioral Health & Social Service Providers Secondary
261QR0405X Substance Use Disorder Rehabilitation Clinic/Center Ambulatory Health Care Facilities Secondary
374U00000X Home Health Aide Nursing Service Related Providers Secondary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Secondary
104100000X Social Worker Behavioral Health & Social Service Providers Secondary
172V00000X Community Health Worker Other Service Providers · License CHW0000000455 (AZ) Secondary
101Y00000X Counselor Behavioral Health & Social Service Providers Secondary
376J00000X Homemaker Nursing Service Related Providers Secondary
372500000X Chore Provider Nursing Service Related Providers Secondary

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

How do I verify Cermillia Williams's NPI record?
Cross-check NPI 1659857316 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1659857316 active?
Yes, as of the latest NPPES snapshot, NPI 1659857316 is active (record last updated 2026-03-10).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-10.