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CATHERINE NGUYEN
NPI 1902347347
Urology - Pediatric Urology in Orange, CA

Active since March 18, 2017PECOS Enrolled
101 THE CITY DR S BLDG 55, ORANGE, CA 92868(714) 456-6719 Get Directions Write a Review

NPPES record last updated: May 27, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 27, 2025, Jul 1, 2024, Mar 18, 2017 (3 updates tracked since 2017).

About Catherine Nguyen NPPES

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

CATHERINE NGUYEN (NPI 1902347347) is an individual pediatric urology provider in Orange, California, licensed in California (A158051) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1902347347
Entity TypeIndividualFemale
Primary Taxonomy2088P0231X
Provider Legal NameCATHERINE NGUYEN
Location Address101 THE CITY DR S BLDG 55Orange, CA 92868-3201
Mailing Address101 The City Dr S Bldg 55Orange, CA 92868-3201
Phone(714) 456-6719
Sole ProprietorNo
Enumeration DateMarch 18, 2017
Last NPPES UpdateMay 27, 20253 updates tracked since enumeration
NPPES CertifiedJuly 1, 2024
✔ NPI 1902347347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyUrology · Pediatric UrologyAllopathic & Osteopathic Physicians
Taxonomy Code2088P0231X
License✔ Licensed in CA · A158051
Definition
Surgeons who can diagnose, treat, and manage children's urinary and genital problems. A pediatric urologist devotes a minimum of 50% of his or her practice to the urologic problems of infants, children, and adolescents. Pediatric urologists generally provide the following services: the evaluation and management of voiding disorders; vesicoureteral reflux, and urinary tract infections that require surgery; surgical reconstruction of the urinary tract (kidneys, ureters, and bladder) including genital abnormalities, hypospadias, and intersex conditions; surgery for groin conditions in childhood and adolescence (undescended testes, hydrocele/hernia, varicocele).
101 THE CITY DR S BLDG 55, Orange, CA 92868
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Catherine Nguyen 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 Reassignments

2

Medicare enrollment records show Catherine Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern California Permanente Medical Group
6.1 mi
Health Maintenance Organization
441 N LAKEVIEW AVE
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1952333460 (714) 279-4000
Faculty Physicians And Surgeons Of Llusm
11 mi
Internal Medicine
16305 SAND CANYON AVE, # 220
Irvine, CA 92618
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1417400573 (909) 558-2480

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

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 Catherine Nguyen's NPI number?

The NPI number for Catherine Nguyen is 1902347347. It was assigned to this individual provider in the NPPES registry on March 18, 2017.

Where is Catherine Nguyen located?

Catherine Nguyen practices at 101 The City Dr S Bldg 55, Orange, CA 92868. The listed phone number is (714) 456-6719.

What is Catherine Nguyen's specialty?

The primary specialty registered for this NPI is Urology, specializing in Pediatric Urology, with taxonomy code 2088P0231X.

Is Catherine Nguyen enrolled in Medicare?

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

Which organizations bill Medicare for Catherine Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Nguyen reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Anaheim, CA) and Faculty Physicians And Surgeons Of Llusm (Irvine, CA). Each 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 Catherine 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 Catherine Nguyen was last updated on May 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.