Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Yoojin Koo

General Practice Dentistry in Dupont, WA · enumerated 2025 · practices at Northwest Smiles.

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

National Provider Identifier

1831071919

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Registry record

Entity type Individual (Type 1)

Name Yoojin Koo

Sex Female

Practice address 1545 Wilmington Dr Ste 100, Dupont, WA, 98327

Phone (253) 581-6779

Enumeration date Jul 22, 2025

Last updated in NPPES Jul 22, 2025

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DENT.DE.70010343 (WA) 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 1831071919 active?

Yes, as of the latest NPPES snapshot, NPI 1831071919 is active (record last updated 2025-07-22).

How do I verify Yoojin Koo's NPI record?

Cross-check NPI 1831071919 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Northwest Smiles Dental Clinic/Center · Dupont, WA NPI 1275362840

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-22.