NPI Portal NPI Lookup & Verification

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

Kathryn Mahoney O'Malley, RN FNP

Community Health/Public Health Clinical Nurse Specialist in Eureka, CA · enumerated 2016.

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

National Provider Identifier

1952845596

Verified

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Registry record

Entity type Individual (Type 1)
Name Kathryn Mahoney O'Malley
Credential RN FNP
Sex Female
Practice address Eureka, CA, 95501
Phone (707) 476-4981
Fax (707) 476-4998
Enumeration date Dec 16, 2016
Last updated in NPPES Dec 16, 2016

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

Taxonomy & licenses

163WP2201X Ambulatory Care Registered Nurse Nursing Service Providers · License 389678 (CA) Secondary
364SC1501X Community Health/Public Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 389678 (CA) Primary

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

What specialty is Kathryn O'Malley?
Kathryn O'Malley is registered in NPPES with the primary taxonomy of Community Health/Public Health Clinical Nurse Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-16.