Hung Nguyen, M.D.
NPI 1538181763 · Internal Medicine Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hung Nguyen, M.D. is a Internal Medicine Physician provider in Garden Grove, CA (NPI 1538181763).
Provider details
- NPI number
- 1538181763
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G71814 (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
19 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
2,224 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,439 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 390 | $95 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 184 | $9 |
| Administration of Influenza Virus VaccineG0008 | 85 | $35 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 62 | $59 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians and |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 154 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 568 | 229 |
| Atorvastatin Calcium | 540 | 235 |
| Celecoxib | 483 | 264 |
| Losartan Potassium | 452 | 188 |
| Triamcinolone Acetonide | 339 | 170 |
| Azithromycin | 320 | 204 |
| Metformin Hcl | 308 | 115 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,203 across 11 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
- 2006-07-24
- Last updated
- 2017-04-10
Frequently asked questions
- What is Hung Nguyen's NPI number?
- Hung Nguyen's National Provider Identifier (NPI) is 1538181763, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hung Nguyen's specialty?
- Hung Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hung Nguyen located?
- Hung Nguyen's practice location on file with NPPES is 10900 Westminster Ave Ste 3, Garden Grove, CA 92843-4984.
- What is Hung Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Hung Nguyen is (714) 539-0444.
- Does Hung Nguyen accept Medicare?
- Hung Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hung Nguyen's NPI active?
- Yes — Hung Nguyen's NPI (1538181763) is active in the NPPES registry as of the last update on 2017-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.