Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. George Walter Warren, MSW CAPSW

Clinical Social Worker in Janesville, WI · enumerated 2014 · practices at Lutheran Social Services of Wisconsin and Upper Michigan, Inc..

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

National Provider Identifier

1851793350

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Registry record

Entity type Individual (Type 1)

Name Mr. George Walter Warren

Credential MSW CAPSW

Sex Male

Practice address 612 N Randall Ave, Janesville, WI, 53545

Phone (262) 853-1859

Enumeration date Sep 16, 2014

Last updated in NPPES Sep 16, 2014

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 129414-121 (WI) 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

What specialty is George Warren?

George Warren is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-16.