Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gregory Cowan LLC

Adult Mental Health Clinic/Center in Weston, WI · enumerated 2011 · authorized official Gregory Cowan, Psychologist.

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

National Provider Identifier

1538453584

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Registry record

Entity type Organization (Type 2)

Legal business name Gregory Cowan LLC

Practice address 3301 Cranberry Blvd, Floor 2, Weston, WI, 54476

Phone (715) 393-3953

Enumeration date Jun 7, 2011

Last updated in NPPES Jun 7, 2011

Taxonomy & classification

261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities · License 2343-57 (WI) Primary

Authorized official

Name Gregory Cowan

Title Psychologist

Phone (715) 393-3953

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

Where is Gregory Cowan LLC located?

The practice location on file with NPPES is in Weston, WI.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-06-07. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-07.