Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Troy Johnson, AUD

Q: What is the NPI number for Troy Johnson?

The National Provider Identifier (NPI) for Troy Johnson is 1255564423, a Type 1 (individual) record in the CMS NPPES registry.

Audiologist in Tacoma, WA · enumerated 2009 · practices at Hearing By Design, Inc.

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

National Provider Identifier

1255564423

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Registry record

Entity type Individual (Type 1)

Name Troy Johnson

Credential AUD

Sex Male

Practice address 1311 S Union Ave, Ste 102, Tacoma, WA, 98405

Phone (253) 759-3555

Fax (253) 759-2988

Enumeration date Sep 3, 2009

Last updated in NPPES Jan 19, 2011

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License LD60170108 (WA) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Troy Johnson practice?

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

What is the NPI number for Troy Johnson?

The National Provider Identifier (NPI) for Troy Johnson is 1255564423, 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 2011-01-19.