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

Harriet Cuddihy Butz, LMSW

Clinical Social Worker in Ann Arbor, MI · enumerated 2020.

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

National Provider Identifier

1679182232

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Registry record

Entity type Individual (Type 1)

Name Harriet Cuddihy Butz

Credential LMSW

Sex Female

Practice address Ann Arbor, MI, 48105

Phone (734) 657-4188

Enumeration date Jul 29, 2020

Last updated in NPPES Jul 29, 2020

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6801103896 (MI) Primary

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 Harriet Butz's NPI record?

Cross-check NPI 1679182232 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1679182232 active?

Yes, as of the latest NPPES snapshot, NPI 1679182232 is active (record last updated 2020-07-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-29.