Thuyvan Nguyen, D.O.
NPI 1275859233 · Internal Medicine Physician · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thuyvan Nguyen, D.O. is a Internal Medicine Physician provider in Costa Mesa, CA (NPI 1275859233).
Provider details
- NPI number
- 1275859233
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A11905 (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
16 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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 34 | 14 |
| Omeprazole | 34 | — |
| Atorvastatin Calcium | 29 | 14 |
| Metoprolol Tartrate | 24 | — |
| Tamsulosin Hcl | 16 | — |
| Finasteride | 16 | — |
| Alendronate Sodium | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-15
- Last updated
- 2015-09-28
Frequently asked questions
- What is Thuyvan Nguyen's NPI number?
- Thuyvan Nguyen's National Provider Identifier (NPI) is 1275859233, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thuyvan Nguyen's specialty?
- Thuyvan Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thuyvan Nguyen located?
- Thuyvan Nguyen's practice location on file with NPPES is 1665 Scenic Ave, Costa Mesa, CA 92626-1443.
- What is Thuyvan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thuyvan Nguyen is (714) 436-4444.
- Does Thuyvan Nguyen accept Medicare?
- Thuyvan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thuyvan Nguyen's NPI active?
- Yes — Thuyvan Nguyen's NPI (1275859233) is active in the NPPES registry as of the last update on 2015-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.