Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gary W Williamson, MD

Emergency Medicine Physician in Tyler, TX · enumerated 2006.

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

National Provider Identifier

1851333850

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Registry record

Entity type Individual (Type 1)

Name Gary W Williamson

Credential MD

Sex Male

Practice address 800 E Dawson St, Tyler, TX, 75701

Phone (903) 593-8441

Enumeration date Jun 12, 2006

Last updated in NPPES Mar 16, 2015

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License F2120 (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
139811722	Medicaid	TX	-
8CU714	Other	TX	BCBS
0042EJ	Other	TX	BCBS
080126648	Other	TX	RAIL ROAD
75-0818167-022	Other	TX	TRICARE
75-0818167-048	Other	TX	TRICARE
8M5091	Other	TX	BCBS
TIN PLUS 044	Other	TX	TRICARE WINNSBORO LOCATION
75-2616977	Other	TX	RAIL ROAD
75-2616977-028	Other	TX	TRICARE
TIN PLUS 015	Other	TX	TRICARE TYLER LOCATION
139811714	Medicaid	TX	-
75-2616977-001	Other	TX	TRICARE
139811724	Medicaid	TX	-
75-2616977-002	Other	TX	TRICARE
139811723	Medicaid	TX	-
TIN PLUS 005	Other	TX	TRICARE
139811721	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.

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Frequently asked questions

How do I verify Gary Williamson's NPI record?

Cross-check NPI 1851333850 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851333850 active?

Yes, as of the latest NPPES snapshot, NPI 1851333850 is active (record last updated 2015-03-16).

Other providers at this practice address

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Michael Gorby Internal Medicine Physician · Tyler, TX NPI 1366446049 Mother Frances Hospital Regional Health Care Center General Acute Care Hospital · Tyler, TX NPI 1679578439 Vicki Fox Acute Care Nurse Practitioner · Tyler, TX NPI 1649277138 James Collier Certified Registered Nurse Anesthetist · Tyler, TX NPI 1740288117 Robert Lueken Undersea and Hyperbaric Medicine (Emergency Medicine) Physician · Tyler, TX NPI 1649271677 Richard Wilson Internal Medicine Physician · Tyler, TX NPI 1609877000 Continuecare Hospital of Tyler, Inc. Long Term Care Hospital · Tyler, TX NPI 1174524466 Justin Hooper Pharmacist · Tyler, TX NPI 1215939046

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-16.