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

Mr. Gary C Matthesen, MPA OTR

Occupational Therapist in Whitestone, NY · enumerated 2011.

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

National Provider Identifier

1194023309

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Registry record

Entity type Individual (Type 1)

Name Mr. Gary C Matthesen

Credential MPA OTR

Sex Male

Practice address Whitestone, NY, 11357

Phone (718) 767-0091

Enumeration date Mar 11, 2011

Last updated in NPPES Feb 20, 2019

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 387-1 (NY) Secondary

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

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 does Gary Matthesen practice?

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

What is the NPI number for Gary Matthesen?

The National Provider Identifier (NPI) for Gary Matthesen is 1194023309, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-20.