Anhtuan Nguyen, MD
NPI 1386698660 · Internal Medicine Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anhtuan Nguyen, MD is a Internal Medicine Physician provider in Westminster, CA (NPI 1386698660).
Provider details
- NPI number
- 1386698660
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A62375 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,329 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 749 | $94 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 537 | $5 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 383 | $133 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 231 | $59 |
| Administration of Influenza Virus VaccineG0008 | 140 | $29 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 207 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 1,340 | 314 |
| Amlodipine Besylate | 806 | 230 |
| Empagliflozinbrand: Jardiance | 782 | 93 |
| Atorvastatin Calcium | 763 | 221 |
| Pioglitazone Hcl | 755 | 172 |
| Metformin Hclbrand: Metformin Hcl Er | 721 | 175 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,234 across 14 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2020-11-17
- Certified
- 2020-11-17
Frequently asked questions
- What is Anhtuan Nguyen's NPI number?
- Anhtuan Nguyen's National Provider Identifier (NPI) is 1386698660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anhtuan Nguyen's specialty?
- Anhtuan Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Anhtuan Nguyen located?
- Anhtuan Nguyen's practice location on file with NPPES is 14541 Brookhurst St, Westminster, CA 92683-5700.
- What is Anhtuan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Anhtuan Nguyen is (714) 531-2000.
- Does Anhtuan Nguyen accept Medicare?
- Anhtuan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anhtuan Nguyen's NPI active?
- Yes — Anhtuan Nguyen's NPI (1386698660) is active in the NPPES registry as of the last update on 2020-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.