Helen Nguyen, M.D.
NPI 1386762508 · Family Medicine Physician · Rancho Cucamonga, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Nguyen, M.D. is a Family Medicine Physician provider in Rancho Cucamonga, CA (NPI 1386762508).
Provider details
- NPI number
- 1386762508
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- C54091 (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 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 217 | 85 |
| Levothyroxine Sodium | 105 | 39 |
| Lisinopril | 96 | 37 |
| Amlodipine Besylate | 81 | 31 |
| Losartan Potassium | 79 | 30 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 78 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-26
- Last updated
- 2021-11-29
Frequently asked questions
- What is Helen Nguyen's NPI number?
- Helen Nguyen's National Provider Identifier (NPI) is 1386762508, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Nguyen's specialty?
- Helen Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Nguyen located?
- Helen Nguyen's practice location on file with NPPES is 10850 Arrow Rte, Rancho Cucamonga, CA 91730-4833.
- What is Helen Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Helen Nguyen is (888) 750-0036.
- Does Helen Nguyen accept Medicare?
- Helen Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Nguyen's NPI active?
- Yes — Helen Nguyen's NPI (1386762508) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.