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

Ms. Joanne M O'Malley-Mattio, RN

Home Health Registered Nurse in Neenah, WI · enumerated 2011.

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

National Provider Identifier

1225324874

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Registry record

Entity type Individual (Type 1)

Name Ms. Joanne M O'Malley-Mattio

Credential RN

Sex Female

Practice address Neenah, WI, 54956

Phone (920) 720-0922

Enumeration date Jun 22, 2011

Last updated in NPPES Jun 22, 2011

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

Taxonomy & licenses

163WH0200X Home Health Registered Nurse Nursing Service Providers · License 165128-30 (WI) 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

How do I verify Joanne O'Malley-Mattio's NPI record?

Cross-check NPI 1225324874 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1225324874 active?

Yes, as of the latest NPPES snapshot, NPI 1225324874 is active (record last updated 2011-06-22).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-22.