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

Mrs. Kathleen Anne O'Brien, ANP-C, FNP-C, GNP-C

Family Nurse Practitioner in Horseshoe Bay, TX · enumerated 2006.

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

National Provider Identifier

1225044407

Verified

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Registry record

Entity type Individual (Type 1)
Name Mrs. Kathleen Anne O'Brien
Credential ANP-C, FNP-C, GNP-C
Sex Female
Practice address Horseshoe Bay, TX, 78657
Phone (830) 596-6900
Fax (830) 596-6901
Enumeration date Jul 31, 2006
Last updated in NPPES Dec 4, 2025

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

Taxonomy & licenses

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP110316 (TX) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP110316 (TX) Primary
363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP110316 (TX) Secondary

Other identifiers

Identifier Type State Issuer
P085N6092 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

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 Kathleen O'Brien?
Kathleen O'Brien is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-04.