Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Diane Vennessa Davis-Williams, CCC-SLP

Speech-Language Pathologist in Matteson, IL · enumerated 2007.

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

National Provider Identifier

1053519090

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Registry record

Entity type Individual (Type 1)

Name Dr. Diane Vennessa Davis-Williams

Credential CCC-SLP

Sex Female

Practice address 4747 Lincoln Mall Dr, Suite #302, Matteson, IL, 60443

Phone (708) 679-0680

Fax (708) 679-0683

Enumeration date Jul 10, 2007

Last updated in NPPES Jul 10, 2007

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.

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Frequently asked questions

What is the NPI number for Diane Davis-Williams?

The National Provider Identifier (NPI) for Diane Davis-Williams is 1053519090, a Type 1 (individual) record in the CMS NPPES registry.

Where does Diane Davis-Williams practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-10.