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Matthew Mackay, PSY.D.

Clinical Psychologist in St George, UT · enumerated 2007.

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

National Provider Identifier

1619160645

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Registry record

Entity type Individual (Type 1)
Name Matthew Mackay
Credential PSY.D.
Sex Male
Practice address 1380 E Medical Center Dr Ste 3100, St George, UT, 84790
Phone (435) 251-2740
Enumeration date Aug 22, 2007
Last updated in NPPES Apr 9, 2015

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY25080 (CA) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 376697 (UT) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

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

Where does Matthew Mackay practice?
The practice location on file with NPPES is in St George, UT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Matthew Mackay?
The National Provider Identifier (NPI) for Matthew Mackay is 1619160645, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-09.