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

DR. XING YEN QUEK DO
NPI 1255033957
Pediatrics in Diamond Bar, CA

Q: What is Xing Yen Quek's NPI number?

The NPI number for Xing Yen Quek is 1255033957. It was assigned to this individual provider in the NPPES registry on March 20, 2023.

Q: What is Xing Yen Quek's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Xing Yen Quek was last updated on September 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 March 20, 2023

253 S DIAMOND BAR BLVD, DIAMOND BAR, CA 91765(805) 456-6349 Get Directions Write a Review

NPPES record last updated: September 2, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 2, 2026, Mar 20, 2023 (2 updates tracked since 2023).

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About Dr. Xing Yen Quek Do NPPES

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

DR. XING YEN QUEK DO (NPI 1255033957) is an individual pediatrics provider in Diamond Bar, California, licensed in California (20A23235) and active in the NPI registry since March 2023. She maintains a secondary practice location in Orange.

NPPES Registry Identity

NPI1255033957

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. XING YEN QUEKCredential: DO

Location Address253 S DIAMOND BAR BLVDDiamond Bar, CA 91765-1606

Mailing Address505 S Main St Ste 525Orange, CA 92868-4553 · (909) 509-8547

Phone(805) 456-6349

Sole ProprietorNo

Enumeration DateMarch 20, 2023

Last NPPES UpdateSeptember 2, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 2, 2026

✔ NPI 1255033957 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in CA · 20A23235

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

253 S DIAMOND BAR BLVD, Diamond Bar, CA 91765

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Secondary Practice Location 1

Location 1505 S Main St Ste 525Orange, CA 92868-4553 · Phone (909) 509-8547

Other Providers at the Same Location NPPES 9

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

ANNE LIAO MD

Obstetrics & Gynecology