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

VIVIAN THANH PHAM
NPI 1639947765
Pediatrics in Orange, CA

Active since December 18, 2023
505 S MAIN ST STE 525, ORANGE, CA 92868(714) 509-8547 Get Directions Write a Review

NPPES record last updated: July 21, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 21, 2026, Mar 23, 2025 (2 updates tracked since 2025).

About Vivian Thanh Pham NPPES

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

VIVIAN THANH PHAM (NPI 1639947765) is an individual pediatrics provider in Orange, California, licensed in California (17805) and active in the NPI registry since December 2023.

NPPES Registry Identity

NPI1639947765
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameVIVIAN THANH PHAM
Location Address505 S MAIN ST STE 525Orange, CA 92868-4553
Mailing Address505 S Main St Ste 525Orange, CA 92868-4553 · (714) 509-8547
Phone(714) 509-8547
Sole ProprietorNo
Enumeration DateDecember 18, 2023
Last NPPES UpdateJuly 21, 20262 updates tracked since enumeration
NPPES CertifiedJuly 21, 2026
✔ NPI 1639947765 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · 17805
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.
505 S MAIN ST STE 525, Orange, CA 92868
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Other Providers at the Same Location NPPES 20

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

LINDSEY LILL
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
ESTHER CHANG
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (925) 785-6878
LUKE YU MD
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 456-5631
CHARISSA LAU
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
MARIA NGUYEN DO
Pediatrics
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
REGINA TANG
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
DEAN TODD MD
Pediatrics
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 456-5631
KATHERINE ALOYSIUS KILLMOND
Pediatrics
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 456-5631

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 Vivian Pham's NPI number?

The NPI number for Vivian Pham is 1639947765. It was assigned to this individual provider in the NPPES registry on December 18, 2023.

Where is Vivian Pham located?

Vivian Pham practices at 505 S Main St Ste 525, Orange, CA 92868. The listed phone number is (714) 509-8547.

What is Vivian Pham's specialty?

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

When was this NPI record last updated?

The NPPES record for Vivian Pham was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 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.