NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Griffith, M.S.S.W., LICSW

Clinical Social Worker in Menasha, WI · enumerated 2006.

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

National Provider Identifier

1427000991

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Registry record

Entity type Individual (Type 1)
Name Michael Griffith
Credential M.S.S.W., LICSW
Sex Male
Practice address 1095 Midway Rd, Menasha, WI, 54952
Phone (920) 720-2300
Fax (920) 720-3719
Enumeration date May 16, 2006
Last updated in NPPES Mar 17, 2018

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 10360 (MN) Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 823-123 (WI) Primary

Other identifiers

Identifier Type State Issuer
95D75GR Other MN BLUECROSS/BLUESHIELD ID

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

Is NPI 1427000991 active?
Yes, as of the latest NPPES snapshot, NPI 1427000991 is active (record last updated 2018-03-17).
How do I verify Michael Griffith's NPI record?
Cross-check NPI 1427000991 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 2018-03-17.