Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

William Paul Andrews, PHD

Clinical Psychologist in Tyler, TX · enumerated 2006.

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

National Provider Identifier

1811900723

Verified

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Registry record

Entity type Individual (Type 1)

Name William Paul Andrews

Credential PHD

Sex Male

Practice address Tyler, TX, 75702

Phone (903) 581-2085

Enumeration date Aug 14, 2006

Last updated in NPPES Dec 23, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 25607 (TX) 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
122194701	Medicaid	TX	-

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 William Andrews practice?

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

What is the NPI number for William Andrews?

The National Provider Identifier (NPI) for William Andrews is 1811900723, a Type 1 (individual) record in the CMS NPPES registry.

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Donald Fulsom Addiction Psychiatry Physician · Tyler, TX NPI 1679568794

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-23.