Vannhu Nguyen, M.D.
NPI 1235399536 · Urology Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vannhu Nguyen, M.D. is a Urology Physician provider in Green Bay, WI (NPI 1235399536).
Provider details
- NPI number
- 1235399536
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 57464 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
563 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 134 | $115 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 108 | $83 |
| Urinalysis, Manual Test81002 | 107 | $3 |
| Diagnostic Exam of Bladder and Urethra Using an Endoscope52000 | 66 | $222 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 65 | $10 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Finasteride | 362 | 96 |
| Tamsulosin Hcl | 320 | 100 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 179 | 47 |
| Mirabegronbrand: Myrbetriq | 170 | 33 |
| Methenamine Hippurate | 103 | 29 |
| Potassium Citratebrand: Potassium Citrate Er | 86 | 24 |
| Oxybutynin Chloride | 75 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-11
- Last updated
- 2022-09-01
- Certified
- 2022-09-01
Frequently asked questions
- What is Vannhu Nguyen's NPI number?
- Vannhu Nguyen's National Provider Identifier (NPI) is 1235399536, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vannhu Nguyen's specialty?
- Vannhu Nguyen is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Vannhu Nguyen located?
- Vannhu Nguyen's practice location on file with NPPES is 2845 Greenbrier Rd, Green Bay, WI 54311-6519.
- What is Vannhu Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Vannhu Nguyen is (920) 288-8280.
- Does Vannhu Nguyen accept Medicare?
- Vannhu Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vannhu Nguyen's NPI active?
- Yes — Vannhu Nguyen's NPI (1235399536) is active in the NPPES registry as of the last update on 2022-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.