1. Home
  2. Directory
  3. California
  4. Fullerton
  5. Dentist
  6. NPI Profile

DR. WILLIAM YEN-JUNG CHEN D.D.S.
NPI 1639375991
Dentist - Endodontics in Fullerton, CA

Active since June 25, 2007
259 LAGUNA RD, FULLERTON, CA 92835(714) 738-6651 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Yen-jung Chen D.d.s. NPPES

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

DR. WILLIAM YEN-JUNG CHEN D.D.S. (NPI 1639375991) is an individual endodontics provider in Fullerton, California, licensed in California (45838) and active in the NPI registry since June 2007.

NPPES Registry Identity

NPI1639375991
Entity TypeIndividualMale
Primary Taxonomy1223E0200X
Provider Legal NameDR. WILLIAM YEN-JUNG CHENCredential: D.D.S.
Location Address259 LAGUNA RDFullerton, CA 92835-2515
Mailing Address2396 Buckingham LnLos Angeles, CA 90077-1338 · (714) 738-6651
Phone(714) 738-6651
Sole ProprietorYes
Enumeration DateJune 25, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1639375991 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · EndodonticsDental Providers
Taxonomy Code1223E0200X
License✔ Licensed in CA · 45838
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.
259 LAGUNA RD, Fullerton, CA 92835
Open in Google Maps ↗

Other Providers at the Same Location NPPES

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

DR. JOHN ROBERT LYTHGOE D.D.S.
Dentist (Endodontics)
259 LAGUNA RD
FULLERTON, CA 92835
Orange County (714) 739-6651

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 William Chen's NPI number?

The NPI number for William Chen is 1639375991. It was assigned to this individual provider in the NPPES registry on June 25, 2007.

Where is William Chen located?

William Chen practices at 259 Laguna Rd, Fullerton, CA 92835. The listed phone number is (714) 738-6651.

What is William Chen'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 William Chen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.