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

Marc Joseph Mestyanek

Marriage & Family Therapist in Laguna Hills, CA · enumerated 2007.

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

National Provider Identifier

1407908684

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Registry record

Entity type Individual (Type 1)
Name Marc Joseph Mestyanek
Sex Male
Practice address Laguna Hills, CA, 92653
Phone (714) 644-6480
Enumeration date Jan 17, 2007
Last updated in NPPES May 13, 2026

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

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License T3136 (OR) Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 48264 (CA) Primary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 00010938 (WA) 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.

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Frequently asked questions

What is the NPI number for Marc Mestyanek?
The National Provider Identifier (NPI) for Marc Mestyanek is 1407908684, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marc Mestyanek practice?
The practice location on file with NPPES is in Laguna Hills, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-13.