Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Brendan Joseph Hammack, RN

Registered Nurse in Victoria, TX · enumerated 2026.

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

National Provider Identifier

1215851761

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Brendan Joseph Hammack

Credential RN

Sex Male

Practice address 506 E San Antonio St, Victoria, TX, 77901

Phone (361) 788-6600

Enumeration date Aug 7, 2026

Last updated in NPPES Aug 7, 2026

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 935852 (TX) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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

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 Brendan Hammack?

Brendan Hammack is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Victoria of Texas Lp General Acute Care Hospital · Victoria, TX NPI 1851343909 Grace Emergency Physicians Emergency Medicine Physician · Victoria, TX NPI 1679528202 Victoria of Texas Lp Rehabilitation Hospital Unit · Victoria, TX NPI 1053366625 Santiago Marroquin Diagnostic Radiology Physician · Victoria, TX NPI 1073541835 Ginna Nelson Family Medicine Physician · Victoria, TX NPI 1841208543 James Brand Emergency Medicine Physician · Victoria, TX NPI 1710996350 Irma Brand Nurse Practitioner · Victoria, TX NPI 1407865058 Matias Medina Emergency Medicine Physician · Victoria, TX NPI 1114936788

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-07.