Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Marie Mayhall

Speech-Language Pathologist in Granite City, IL · enumerated 2017.

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

National Provider Identifier

1831615590

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Registry record

Entity type Individual (Type 1)

Name Ann Marie Mayhall

Sex Female

Practice address 2040 Johnson Rd, Granite City, IL, 62040

Phone (618) 451-5800

Enumeration date Aug 15, 2017

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers 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 specialty is Ann Mayhall?

Ann Mayhall is registered in NPPES with the primary taxonomy of Speech-Language Pathologist. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.