Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark S Maxwell, AUD

Audiologist in Glendale, AZ · enumerated 2013.

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

National Provider Identifier

1770921884

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark S Maxwell

Credential AUD

Sex Male

Practice address 18700 N 64th Dr, Ste 201, Glendale, AZ, 85308

Phone (623) 566-4718

Enumeration date Jun 11, 2013

Last updated in NPPES Jun 11, 2013

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License DA8304 (AZ) 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.

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Frequently asked questions

What specialty is Mark Maxwell?

Mark Maxwell 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-11.