Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Guay, BSN, RN

Registered Nurse in Marinette, WI · enumerated 2026.

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

National Provider Identifier

1043138274

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Registry record

Entity type Individual (Type 1)

Name Melissa Guay

Credential BSN, RN

Sex Female

Practice address 1011 Water St, Marinette, WI, 54143

Phone (715) 735-1510

Enumeration date Jul 7, 2026

Last updated in NPPES Jul 7, 2026

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 159832-30 (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 Melissa Guay's NPI record?

Cross-check NPI 1043138274 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1043138274 active?

Yes, as of the latest NPPES snapshot, NPI 1043138274 is active (record last updated 2026-07-07).

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