Katherine Nguyen
NPI 1871235556 · Internal Medicine Physician · West Hills, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Nguyen is a Internal Medicine Physician provider in West Hills, CA (NPI 1871235556).
Provider details
- NPI number
- 1871235556
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 20A21616 (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
4 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 44 | 21 |
| Lisinopril | 29 | 15 |
| Amlodipine Besylate | 25 | 11 |
| Metformin Hcl | 24 | — |
| Gabapentin | 16 | — |
| Losartan Potassium | 16 | — |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-12
- Last updated
- 2025-06-19
- Certified
- 2025-06-19
Frequently asked questions
- What is Katherine Nguyen's NPI number?
- Katherine Nguyen's National Provider Identifier (NPI) is 1871235556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Nguyen's specialty?
- Katherine Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Nguyen located?
- Katherine Nguyen's practice location on file with NPPES is 22110 Roscoe Blvd Ste 100, West Hills, CA 91304-3875.
- What is Katherine Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Katherine Nguyen is (818) 481-0118.
- Does Katherine Nguyen accept Medicare?
- Katherine Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Nguyen's NPI active?
- Yes — Katherine Nguyen's NPI (1871235556) is active in the NPPES registry as of the last update on 2025-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.