Vien Nguyen, MD
NPI 1477654358 · Internal Medicine Physician · Lawrenceville, GA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vien Nguyen, MD is a Internal Medicine Physician provider in Lawrenceville, GA (NPI 1477654358).
Provider details
- NPI number
- 1477654358
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 58111 (GA)
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
19 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
193 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 112 | $74 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 54 | $47 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 16 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 11 | $108 |
Typical Medicare-allowed amounts for these services range $47–$108 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-26
- Last updated
- 2025-08-07
- Certified
- 2025-08-07
Frequently asked questions
- What is Vien Nguyen's NPI number?
- Vien Nguyen's National Provider Identifier (NPI) is 1477654358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vien Nguyen's specialty?
- Vien Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Vien Nguyen located?
- Vien Nguyen's practice location on file with NPPES is 4850 Sugarloaf Pkwy Ste 101, Lawrenceville, GA 30044-2860.
- What is Vien Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Vien Nguyen is (678) 490-8300.
- Does Vien Nguyen accept Medicare?
- Vien Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vien Nguyen's NPI active?
- Yes — Vien Nguyen's NPI (1477654358) is active in the NPPES registry as of the last update on 2025-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.