Thuong Nguyen, M.D.
NPI 1831196294 · Allergy & Immunology Physician · Visalia, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thuong Nguyen, M.D. is a Allergy & Immunology Physician provider in Visalia, CA (NPI 1831196294).
Provider details
- NPI number
- 1831196294
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G77992 (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
2,548 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 1,345 | $4 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 325 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 258 | $92 |
| Professional Service for Multiple Injections of Allergen95117 | 252 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 132 | $129 |
| Professional Service for Single Injection of Allergen95115 | 105 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 233 | 85 |
| Montelukast Sodium | 220 | 62 |
| Fluticasone Propionate | 131 | 57 |
| Ipratropium Bromide | 122 | 45 |
| Prednisone | 76 | 41 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 72 | 30 |
| Levocetirizine Dihydrochloride | 67 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,985 across 93 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
- 2005-06-30
- Last updated
- 2016-10-03
Frequently asked questions
- What is Thuong Nguyen's NPI number?
- Thuong Nguyen's National Provider Identifier (NPI) is 1831196294, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thuong Nguyen's specialty?
- Thuong Nguyen is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Thuong Nguyen located?
- Thuong Nguyen's practice location on file with NPPES is 5400 W Hillsdale Ave, Visalia, CA 93291-8222.
- What is Thuong Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thuong Nguyen is (559) 738-7593.
- Does Thuong Nguyen accept Medicare?
- Thuong Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thuong Nguyen's NPI active?
- Yes — Thuong Nguyen's NPI (1831196294) is active in the NPPES registry as of the last update on 2016-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.