Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dennis L Wack Ph.D LLC

Adult Mental Health Clinic/Center in Wheat Ridge, CO · enumerated 2007 · authorized official Dennis Wack, President.

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

National Provider Identifier

1366642092

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Registry record

Entity type Organization (Type 2)

Legal business name Dennis L Wack Ph.D LLC

Practice address 4045 Wadsworth Blvd, Suite 308, Wheat Ridge, CO, 80033

Phone (303) 421-1896

Fax (303) 237-3589

Enumeration date Jul 20, 2007

Last updated in NPPES Jul 20, 2007

Taxonomy & classification

261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities · License 1083 (CO) Primary

Authorized official

Name Dennis Wack

Title President

Phone (303) 421-1896

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 Dennis L Wack Ph.D LLC located?

The practice location on file with NPPES is in Wheat Ridge, CO.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-07-20. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-20.