Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Clausen, MFTC, LPCC, MA

Marriage & Family Therapist in Boulder, CO · enumerated 2021.

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

National Provider Identifier

1255099792

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Registry record

Entity type Individual (Type 1)

Name Matthew Clausen

Credential MFTC, LPCC, MA

Sex Male

Practice address 350 Broadway St Ste 102, Boulder, CO, 80305

Phone (303) 335-9308

Enumeration date Dec 1, 2021

Last updated in NPPES Feb 10, 2026

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFTC.0014501 (CO) Primary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LPCC.0020882 (CO) Secondary

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

What is the NPI number for Matthew Clausen?

The National Provider Identifier (NPI) for Matthew Clausen is 1255099792, a Type 1 (individual) record in the CMS NPPES registry.

Where does Matthew Clausen practice?

The practice location on file with NPPES is in Boulder, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Joanne Neiman Professional Counselor · Boulder, CO NPI 1104033752 Clausen Therapy, Pllc Marriage & Family Therapist · Boulder, CO NPI 1588439962 Journey Inward Counseling LLC Mental Health Counselor · Boulder, CO NPI 1659263101

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-10.