Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexa T Kozak, AU.D.

Audiologist in Burlington, MA · enumerated 2007.

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

National Provider Identifier

1679694137

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Registry record

Entity type Individual (Type 1)

Name Alexa T Kozak

Credential AU.D.

Sex Female

Practice address Lahey Clinic, 41 Mall Rd., Burlington, MA, 01805

Phone (781) 744-8452

Fax (781) 744-3440

Enumeration date Apr 3, 2007

Last updated in NPPES May 31, 2013

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 822 (MA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
822	Other	MA	LICENSE

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alexa Kozak?

Alexa Kozak is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-31.