Dung Nguyen, MD
NPI 1215004031 · Pulmonary Disease Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dung Nguyen, MD is a Pulmonary Disease Physician provider in Fontana, CA (NPI 1215004031).
Provider details
- NPI number
- 1215004031
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A67897 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 226 | 100 |
| Prednisone | 167 | 94 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 145 | 74 |
| Tiotropium Bromidebrand: Spiriva Respimat | 115 | 35 |
| Montelukast Sodium | 85 | 35 |
| Tiotropium Br/Olodaterol Hclbrand: Stiolto Respimat | 56 | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2021-12-01
Frequently asked questions
- What is Dung Nguyen's NPI number?
- Dung Nguyen's National Provider Identifier (NPI) is 1215004031, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dung Nguyen's specialty?
- Dung Nguyen is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Dung Nguyen located?
- Dung Nguyen's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Dung Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Dung Nguyen is (909) 427-3910.
- Does Dung Nguyen accept Medicare?
- Dung Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dung Nguyen's NPI active?
- Yes — Dung Nguyen's NPI (1215004031) is active in the NPPES registry as of the last update on 2021-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.