NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Glenn R Sullivan, PH.D.

Clinical Psychologist in Lexington, VA · enumerated 2008 · practices at Lexington Psychological Services, Pllc.

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

National Provider Identifier

1871764779

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Registry record

Entity type Individual (Type 1)
Name Dr. Glenn R Sullivan
Credential PH.D.
Sex Male
Practice address 30 Crossing Ln Ste 101, Lexington, VA, 24450
Phone (540) 463-2080
Fax (540) 464-7648
Enumeration date Mar 18, 2008
Last updated in NPPES Mar 19, 2018

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 0810003867 (VA) 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
1103398805 Other VA UNITED HEALTHCARE
923366841 Other VA HEALTHKEEPERS
336-841 Other VA ANTHEM
SC0001096 Medicaid VA -

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

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.
What specialty is Glenn Sullivan?
Glenn Sullivan is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-19.