Vannhu Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Vannhu 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.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)134 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)108 services
3. Urinalysis, manual test (81002)107 services
4. Diagnostic exam of bladder and urethra using an endoscope (52000)66 services
5. Ultrasound measurement of bladder capacity after voiding (51798)65 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%
• Arthritis55%
• Chronic kidney disease38%
• Diabetes36%
• Ischemic heart disease31%

Hospitals where Vannhu Nguyen works

Medicare's Facility Affiliation Data lists Vannhu 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.

• Aurora BayCare Medical CenterGreen Bay, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520193
• Aurora Medical Center Bay AreaMarinette, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520113
• Aurora Medical Center Manitowoc CountyTwo Rivers, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520034

Practice locations

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

• 2845 Greenbrier RdGreen Bay, WI 54311 (920) 288‑8000

Group practices

Medicare enrollment lists Vannhu Nguyen as a member of this group (CMS data updated October 2, 2026).

• BayCare Aurora LLC194 clinicians in the group

Specialties

• Urologyprimary

Find other Urology doctors in Wisconsin →

Other urologists in Green Bay

Clinicians with the same Medicare primary specialty in Green Bay, WI — not a recommendation.

• Heather M. Stefaniak, MD
• Jennifer A. Burns, MD
• Kaylee M. Luck, MD
• Diana M. Lopategui Minaya, MD
• Daniel L. Degroot, MD
• Joshua T. Piotrowski, MD
• Christopher Whelan, MD
• William S. Dougherty, MD

All urologists in Green Bay →

Other clinicians in BayCare Aurora LLC

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

• Kody Wyant, DO
• Sophia M. Bergner
• David J. Miller, MD
• Ayman S. Elbatanony, DO
• Heather M. Stefaniak, MD
• Rebecca E. Fenelon, MD

Clinician information

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