Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Nancy Jean Willis, LMSW

Clinical Social Worker in Ann Arbor, MI · enumerated 2010.

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

National Provider Identifier

1528374907

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Registry record

Entity type Individual (Type 1)

Name Mrs. Nancy Jean Willis

Credential LMSW

Sex Female

Practice address 5060 Jackson Rd Ste D, Ann Arbor, MI, 48103

Phone (734) 627-8001

Fax (734) 433-1989

Enumeration date Aug 24, 2010

Last updated in NPPES Oct 29, 2025

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6801117431 (MI) Primary

104100000X Social Worker Behavioral Health & Social Service Providers · License M-07172 (NM) Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 081889-1 (NY) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1528374907 active?

Yes, as of the latest NPPES snapshot, NPI 1528374907 is active (record last updated 2025-10-29).

How do I verify Nancy Willis's NPI record?

Cross-check NPI 1528374907 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-29.