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

Lindsay O'Sullivan, FNP-C

Nurse Practitioner in Wayne, MI · enumerated 2024.

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

National Provider Identifier

1669217733

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Registry record

Entity type Individual (Type 1)

Name Lindsay O'Sullivan

Credential FNP-C

Sex Female

Practice address Wayne, MI, 48184

Phone (734) 729-4436

Enumeration date Jun 28, 2024

Last updated in NPPES Jul 16, 2024

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704418623 (MI) 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

Is NPI 1669217733 active?

Yes, as of the latest NPPES snapshot, NPI 1669217733 is active (record last updated 2024-07-16).

How do I verify Lindsay O'Sullivan's NPI record?

Cross-check NPI 1669217733 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-16.