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Diane Leigh Williams, PH.D.

Speech-Language Pathologist in Pittsburgh, PA · enumerated 2006 · practices at Duquesne University of the Holy Spirit.

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

National Provider Identifier

1114939501

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Registry record

Entity type Individual (Type 1)
Name Diane Leigh Williams
Credential PH.D.
Sex Female
Practice address 406 Fisher Hall 711 Forbes Ave, Pittsburgh, PA, 15282
Phone (412) 396-4200
Fax (412) 396-1388
Enumeration date Aug 13, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SL005637L (PA) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
698540 Other PA HIGHMARK
698542 Other PA HIGHMARK

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

Where does Diane Williams practice?
The practice location on file with NPPES is in Pittsburgh, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Williams?
The National Provider Identifier (NPI) for Diane Williams is 1114939501, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.