Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Riddick Armstrong III, M.D.

Urology Physician in Tyler, TX · enumerated 2011.

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

National Provider Identifier

1699074351

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Registry record

Entity type Individual (Type 1)

Name William Riddick Armstrong III

Credential M.D.

Sex Male

Practice address 700 Olympic Plaza Cir, Suite 700, Tyler, TX, 75701

Phone (903) 262-3900

Fax (903) 262-3900

Enumeration date Mar 21, 2011

Last updated in NPPES Oct 19, 2016

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License Q9779 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
8GE895	Other	TX	BLUE CROSS BLUE SHIELD OF TEXAS

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 Armstrong 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 Armstrong?

The National Provider Identifier (NPI) for William Armstrong is 1699074351, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-19.