DR. PHUONG CHRISTINE NGUYEN M.D.
NPI 1154342871
Pediatrics - Pediatric Gastroenterology in Palo Alto, CA

Q: What is Phuong Nguyen's NPI number?

The NPI number for Phuong Nguyen is 1154342871. It was assigned to this individual provider in the NPPES registry on July 21, 2006. The provider is also known as Dr. Christine Nguyen M.D..

Q: What is Phuong Nguyen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Q: When was this NPI record last updated?

The NPPES record for Phuong Nguyen was last updated on June 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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 July 21, 2006PECOS Enrolled

750 WELCH RD, SUITE 116, PALO ALTO, CA 94304(650) 723-5070(650) 498-5608 Get Directions Write a Review

NPPES record last updated: June 9, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 9, 2025, Jan 13, 2017, Jan 4, 2017 (3 updates tracked since 2017).

On this page

About Dr. Phuong Christine Nguyen M.d. NPPES

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

DR. PHUONG CHRISTINE NGUYEN M.D. (NPI 1154342871) is an individual pediatric gastroenterology provider in Palo Alto, California, licensed in California (A83319) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1154342871

Entity TypeIndividualFemale

Primary Taxonomy2080P0206X

Provider Legal NameDR. PHUONG CHRISTINE NGUYENCredential: M.D.

Location Address750 WELCH RD, SUITE 116Palo Alto, CA 94304-1507

Mailing Address750 Welch Rd, Suite 116Palo Alto, CA 94304-1507 · (650) 723-5070 · Fax (650) 498-5608

Phone(650) 723-5070

Fax(650) 498-5608

Sole ProprietorNo

Enumeration DateJuly 21, 2006

Last NPPES UpdateJune 9, 20253 updates tracked since enumeration

NPPES CertifiedJune 9, 2025

✔ NPI 1154342871 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0206X

License✔ Licensed in CA · A83319

Definition

A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.

Also ListedPediatricsTaxonomy 208000000X · License A83319 (CA)

750 WELCH RD, Palo Alto, CA 94304

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Other Names 1

Other Name (5)Dr. Christine Nguyen M.d.

Secondary Practice Locations 4

Location 1455 OConnor DrSan Jose, CA 95128-1633 · Phone (408) 283-7676

Location 21642 E Capitol ExpySan Jose, CA 95121-1800 · Phone (408) 445-3431

Location 32039 Forest Ave Ste 105San Jose, CA 95128-4815 · Phone (408) 947-2929

Location 41333 Meridian AveSan Jose, CA 95125-5212 · Phone (408) 445-3400

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Phuong Christine Nguyen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Phuong Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Santa Clara

2.0 mi

Mental Health (Including Community Mental Health Center)

231 GRANT AVENUE
Palo Alto, CA 94306

Reassigned Medicare billing, California enrollment
2,460 clinicians in this Medicare group

NPI 1144330614 (650) 321-5545

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$121.77 typical visit price

range $23.96 – $169.60

Typical copayment $30.44 (range $5.99 – $42.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. ATNHONY ERNEST BURGOS MD, MPH

Pediatrics

750 WELCH RD, SUITE 325
PALO ALTO, CA 94304

Santa Clara County (650) 725-8314

PALO ALTO NEPHROLOGY ASSOCIATES

Internal Medicine (Nephrology)

750 WELCH RD, SUITE 214
PALO ALTO, CA 94304

Santa Clara County (650) 328-8385

DR. PAUL TZEN-CHOU HWANG M.D.

Pediatrics (Neonatal-Perinatal Medicine)

750 WELCH RD, SUITE 315
PALO ALTO, CA 94304

Santa Clara County (650) 723-5711

KRISTINE LAGUIT RN, CNS

Clinical Nurse Specialist (Pediatrics)

750 WELCH RD, SUITE116
PALO ALTO, CA 94304

Santa Clara County (650) 725-2531

DR. HEATHER ELIZABETH CAHAN MD

Pediatrics (Neonatal-Perinatal Medicine)

750 WELCH RD, NEONATAL AND DEVELOPMENTAL MEDICINE MC: 5731
PALO ALTO, CA 94304

Santa Clara County (520) 850-1132

DR. SUSAN RUTH HINTZ M.D.

Pediatrics (Neonatal-Perinatal Medicine)

750 WELCH RD, SUITE 315
PALO ALTO, CA 94304

Santa Clara County (650) 723-5711

ELIF SEDA SELAMET TIERNEY MD

Pediatrics (Pediatric Cardiology)

750 WELCH RD
PALO ALTO, CA 94304

Santa Clara County (650) 497-8000

CHRISTINA STEVENS MD

Pediatrics

750 WELCH RD
PALO ALTO, CA 94304

Santa Clara County (650) 721-6849

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 Phuong Nguyen's NPI number?

The NPI number for Phuong Nguyen is 1154342871. It was assigned to this individual provider in the NPPES registry on July 21, 2006. The provider is also known as Dr. Christine Nguyen M.D..

Where is Phuong Nguyen located?

Phuong Nguyen practices at 750 Welch Rd Suite 116, Palo Alto, CA 94304. The listed phone number is (650) 723-5070.

What is Phuong Nguyen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Phuong Nguyen enrolled in Medicare?

Yes. Phuong Nguyen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Phuong Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Phuong Nguyen reassigns Medicare benefits to County Of Santa Clara (Palo Alto, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Phuong Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Phuong Nguyen was last updated on June 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.