Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olivia Williamson, PA-C

Physician Assistant in Sebewaing, MI · enumerated 2023.

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

National Provider Identifier

1477338184

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Registry record

Entity type Individual (Type 1)

Name Olivia Williamson

Credential PA-C

Sex Female

Practice address 106 E Main St, Sebewaing, MI, 48759

Phone (989) 883-3800

Enumeration date Aug 30, 2023

Last updated in NPPES Sep 15, 2024

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers 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.

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Frequently asked questions

How do I verify Olivia Williamson's NPI record?

Cross-check NPI 1477338184 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477338184 active?

Yes, as of the latest NPPES snapshot, NPI 1477338184 is active (record last updated 2024-09-15).

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Brent Boyce Dermatology Physician · Sebewaing, MI NPI 1417944786 Dalton P Coe DDS PC General Practice Dentistry · Sebewaing, MI NPI 1821100561 Bradi Boyce General Practice Dentistry · Sebewaing, MI NPI 1164523486 Brent M Boyce MD PC Medical Physician Assistant · Sebewaing, MI NPI 1982736054

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-15.