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

Mr. Kurt L. Mahnke, LCSW

Clinical Social Worker in Menasha, WI · enumerated 2007.

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

National Provider Identifier

1336206671

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Registry record

Entity type Individual (Type 1)

Name Mr. Kurt L. Mahnke

Credential LCSW

Sex Male

Practice address Menasha, WI, 54952

Phone (920) 729-6780

Enumeration date Jan 3, 2007

Last updated in NPPES Jan 25, 2010

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

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 252-125 (WI) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 892-123 (WI) Primary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 122-124 (WI) Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
43701400	Medicaid	WI	-

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 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.

What specialty is Kurt Mahnke?

Kurt Mahnke 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-25.