Truongson Nguyen, D.O.
NPI 1629517792 · Family Medicine Physician · Rancho Cucamonga, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Truongson Nguyen, D.O. is a Family Medicine Physician provider in Rancho Cucamonga, CA (NPI 1629517792).
Provider details
- NPI number
- 1629517792
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A18287 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
32 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 20 | $132 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 12 | $172 |
Typical Medicare-allowed amounts for these services range $132–$172 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 72 | 69 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 28 | 28 |
| Benzonatate | 28 | 27 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Amoxicillin | 22 | 22 |
| Ibuprofen | 22 | 22 |
| Azithromycin | 19 | 19 |
Practice location
Mailing address
Additional practice locations (1)
- 120 W Hellman AveMonterey Park, CA 91754-1209Phone: (626) 282-0261
Registry dates
- Enumerated
- 2017-02-22
- Last updated
- 2025-10-22
- Certified
- 2025-10-22
Frequently asked questions
- What is Truongson Nguyen's NPI number?
- Truongson Nguyen's National Provider Identifier (NPI) is 1629517792, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Truongson Nguyen's specialty?
- Truongson Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Truongson Nguyen located?
- Truongson Nguyen's practice location on file with NPPES is 6417 Haven Ave Ste 110, Rancho Cucamonga, CA 91737-3804.
- What is Truongson Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Truongson Nguyen is (909) 941-2273.
- Does Truongson Nguyen accept Medicare?
- Truongson Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Truongson Nguyen's NPI active?
- Yes — Truongson Nguyen's NPI (1629517792) is active in the NPPES registry as of the last update on 2025-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.