Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sadie Sadlowsky Mcgillviray, FNP-C

Family Nurse Practitioner in Iron Mountain, MI · enumerated 2019.

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

National Provider Identifier

1720540958

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Registry record

Entity type Individual (Type 1)

Name Sadie Sadlowsky Mcgillviray

Credential FNP-C

Sex Female

Practice address 440 Woodward Ave, Iron Mountain, MI, 49801

Phone (906) 776-9040

Fax (906) 774-5950

Enumeration date Apr 5, 2019

Last updated in NPPES Jun 21, 2024

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704318130 (MI) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704318130 (MI) Secondary

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 Sadie Mcgillviray's NPI record?

Cross-check NPI 1720540958 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1720540958 active?

Yes, as of the latest NPPES snapshot, NPI 1720540958 is active (record last updated 2024-06-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-21.