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

Gary L. Harrison, CRNA

Certified Registered Nurse Anesthetist in Brenham, TX · enumerated 2006.

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

National Provider Identifier

1639141849

Verified

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Registry record

Entity type Individual (Type 1)

Name Gary L. Harrison

Credential CRNA

Sex Male

Practice address Brenham, TX, 77833

Phone (979) 337-5000

Enumeration date Feb 2, 2006

Last updated in NPPES Nov 6, 2020

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 441803 (TX) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License AP100856 (TX) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
CO1544	Other	AR	ARKANSAS STATE BOARD OF NURSING
119980414	Medicaid	TX	-
8761UC	Other	TX	BCBS
ARNP 2081562	Other	FL	STATE OF FLORIDA

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 Gary Harrison practice?

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

What is the NPI number for Gary Harrison?

The National Provider Identifier (NPI) for Gary Harrison is 1639141849, 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 2020-11-06.