Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Colleen M Koster, LCSW

Clinical Social Worker in Waukesha, WI · enumerated 2010.

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

National Provider Identifier

1417279001

Verified

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Registry record

Entity type Individual (Type 1)

Name Colleen M Koster

Credential LCSW

Sex Female

Practice address W231n1440 Corporate Ct, Waukesha, WI, 53186

Phone (414) 773-4312

Fax (262) 896-6139

Enumeration date Feb 23, 2010

Last updated in NPPES Oct 9, 2023

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 1845 (WI) Primary

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
100008659	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 NPI 1417279001 active?

Yes, as of the latest NPPES snapshot, NPI 1417279001 is active (record last updated 2023-10-09).

How do I verify Colleen Koster's NPI record?

Cross-check NPI 1417279001 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 2023-10-09.