Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary A Magruder, AU.D.

Audiologist in Houston, TX · enumerated 2009.

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

National Provider Identifier

1033340393

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary A Magruder

Credential AU.D.

Sex Female

Practice address 11777 Fm 1960 Rd W, Houston, TX, 77065

Phone (281) 469-4688

Fax (281) 477-9898

Enumeration date Aug 5, 2009

Last updated in NPPES Aug 5, 2009

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 50704 (TX) 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 Mary Magruder practice?

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

What is the NPI number for Mary Magruder?

The National Provider Identifier (NPI) for Mary Magruder is 1033340393, 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 2009-08-05.