Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christina Lynn Trethewey

Speech-Language Pathologist in Holland, MI · enumerated 2023.

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

National Provider Identifier

1336824366

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Registry record

Entity type Individual (Type 1)

Name Christina Lynn Trethewey

Sex Female

Practice address 12300 Quincy St, Holland, MI, 49424

Phone (616) 834-0220

Enumeration date Jun 19, 2023

Last updated in NPPES Sep 4, 2024

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 7101008204 (MI) 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

What is the NPI number for Christina Trethewey?

The National Provider Identifier (NPI) for Christina Trethewey is 1336824366, a Type 1 (individual) record in the CMS NPPES registry.

Where does Christina Trethewey practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-04.