Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Diane Horrigan, RD

Registered Dietitian in Milwaukee, WI · enumerated 2023 · practices at Children'S Medical Group.

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

National Provider Identifier

1093417214

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Registry record

Entity type Individual (Type 1)

Name Margaret Diane Horrigan

Credential RD

Sex Female

Practice address 3365 S 103rd St Ste 100, Milwaukee, WI, 53227

Phone (414) 321-3951

Enumeration date Mar 21, 2023

Last updated in NPPES Feb 18, 2026

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86104695 (WI) Primary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 6202 (WI) Secondary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD 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 Margaret Horrigan's NPI record?

Cross-check NPI 1093417214 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1093417214 active?

Yes, as of the latest NPPES snapshot, NPI 1093417214 is active (record last updated 2026-02-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-18.