Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MISS JI WON YOON DDS
NPI 1275228678
Dentist - Endodontics in Mill Creek, WA

Q: What is Ji Won Yoon's NPI number?

The NPI number for Ji Won Yoon is 1275228678. It was assigned to this individual provider in the NPPES registry on April 11, 2023. The provider is also known as Dr. Christine Yoon Dds.

Q: What is Ji Won Yoon's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Endodontics, with taxonomy code 1223E0200X.

Q: When was this NPI record last updated?

The NPPES record for Ji Won Yoon was last updated on September 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 11, 2023

15808 MILL CREEK BLVD, MILL CREEK, WA 98012(425) 318-4787 Get Directions Write a Review

NPPES record last updated: September 4, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 4, 2026, Apr 11, 2023 (2 updates tracked since 2023).

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About Miss Ji Won Yoon Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MISS JI WON YOON DDS (NPI 1275228678) is an individual endodontics provider in Mill Creek, Washington, licensed in Washington (70131335) and active in the NPI registry since April 2023.

NPPES Registry Identity

NPI1275228678

Entity TypeIndividualFemale

Primary Taxonomy1223E0200X

Provider Legal NameMISS JI WON YOONCredential: DDS

Location Address15808 MILL CREEK BLVDMill Creek, WA 98012-1500

Mailing Address109 Grasslands LnRedwood City, CA 94065-7430 · (760) 212-9171

Phone(425) 318-4787

Sole ProprietorYes

Enumeration DateApril 11, 2023

Last NPPES UpdateSeptember 4, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 4, 2026

✔ NPI 1275228678 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · EndodonticsDental Providers

Taxonomy Code1223E0200X

License✔ Licensed in WA · 70131335

Definition

The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.

15808 MILL CREEK BLVD, Mill Creek, WA 98012

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Other Names 1

Professional Name (2)Dr. Christine Yoon Dds

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AMY BARTNIKOWSKI CNM

Advanced Practice Midwife

15808 MILL CREEK BLVD, STE 200
MILL CREEK, WA 98012

Snohomish County (425) 673-3420

MILL CREEK WOMEN'S HEALTHCARE, PLLC

Obstetrics & Gynecology

15808 MILL CREEK BLVD, SUITE #200
MILL CREEK, WA 98012

Snohomish County (425) 673-3420

MILL CREEK EYE AND CONTACT LENS CLINIC, INC.

Optometrist

15808 MILL CREEK BLVD, SUITE #110
MILL CREEK, WA 98012

Snohomish County (425) 745-5650

DR. ORLY P STEINBERG M.D.

Obstetrics & Gynecology

15808 MILL CREEK BLVD, SUITE 200
MILL CREEK, WA 98012

Snohomish County (425) 673-3420

DR. LEWINA YEASEUL YOUN D.D.S.

Dentist (Endodontics)

15808 MILL CREEK BLVD, 202
MILL CREEK, WA 98012

Snohomish County (425) 318-4787

MR. THOMAS E ARNOLD PT

Physical Therapist

15808 MILL CREEK BLVD
MILL CREEK, WA 98012

Snohomish County (425) 745-4311

DR. FRED MASATO ARIMA OD, FAAO

Optometrist

15808 MILL CREEK BLVD, SUITE 110
MILL CREEK, WA 98012

Snohomish County (425) 745-5650

NIKKI H. CHIN LOWE DDS PLLC

Dentist (General Practice)

15808 MILL CREEK BLVD, SUITE 130
MILL CREEK, WA 98012

Snohomish County (425) 379-8038

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ji Won Yoon's NPI number?

The NPI number for Ji Won Yoon is 1275228678. It was assigned to this individual provider in the NPPES registry on April 11, 2023. The provider is also known as Dr. Christine Yoon Dds.

Where is Ji Won Yoon located?

Ji Won Yoon practices at 15808 Mill Creek Blvd, Mill Creek, WA 98012. The listed phone number is (425) 318-4787.

What is Ji Won Yoon's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Endodontics, with taxonomy code 1223E0200X.

When was this NPI record last updated?

The NPPES record for Ji Won Yoon was last updated on September 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.