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Diagnostic Radiology

Y Vien T. Nguyen, DO

Works at hospitals in Orange, CA · California

Summary

Dr. Y Vien T. Nguyen, DO is a radiologist at 101 The City Dr S, Orange, CA 92868. Phone: (714) 456-7004. Accepts Medicare assignment. In 2024, Y Vien T. Nguyen had 489 Original Medicare patients and 5,412 services. NPI 1811135627. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiologist (Medicare lists Diagnostic Radiology)
  • Address: 101 The City Dr S, Orange, CA 92868 · Directions (1 more location)
  • Phone: (714) 456‑7004
  • Medicare: Accepts Medicare assignment
  • Hospital: UCI Health-Orange
  • Group practice: Beverly Radiology Medical Group III (+1 more)
  • Medical school: At Still University Of Health Sciences, College Of Osteo Med, Kirksville · graduated 2006 (20 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Y Vien T. Nguyen, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Y Vien T. Nguyen accept Medicare assignment?
Yes. Medicare's clinician data says Y Vien T. Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Y Vien T. Nguyen see?
In 2024, CMS data shows 489 Original Medicare patients and 5,412 services for Y Vien T. Nguyen. This counts Original Medicare only and measures volume, not quality.
What is Y Vien T. Nguyen's NPI number?
1811135627. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Y Vien T. Nguyen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients489
Services billed to Medicare5,412
Different services or procedures70
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Injection, gadoterate meglumine, 0.1 ml (A9575)2,800 services
  2. Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)2,015 services
  3. Ct scan of chest with contrast (71260)77 services
  4. Ct scan of chest without contrast (71250)71 services
  5. Ct scan of abdomen and pelvis with contrast (74177)34 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis52%
  • Diabetes36%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)34%
  • Ischemic heart disease33%

Hospitals where Y Vien T. Nguyen works

Medicare's Facility Affiliation Data lists Y Vien T. Nguyen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Y Vien T. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Y Vien T. Nguyen as a member of these groups (CMS data updated October 2, 2026).

  • Beverly Radiology Medical Group III328 clinicians in the group
  • UC Regents108 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in California →

Other radiologists in Orange

Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.

All radiologists in Orange →

Other clinicians in Beverly Radiology Medical Group III

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolAt Still University Of Health Sciences, College Of Osteo Med, Kirksville
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1811135627
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians