Tiffany Nguyen, M.D.
NPI 1770840530 · Internal Medicine Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tiffany Nguyen, M.D. is a Internal Medicine Physician provider in Garden Grove, CA (NPI 1770840530).
Provider details
- NPI number
- 1770840530
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A128638 (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
14 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 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 176 | 61 |
| Amlodipine Besylate | 131 | 43 |
| Losartan Potassium | 100 | 29 |
| Levothyroxine Sodium | 98 | 29 |
| Metformin Hcl | 81 | 25 |
| Simvastatin | 77 | 25 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-04-18
- Last updated
- 2021-12-15
Frequently asked questions
- What is Tiffany Nguyen's NPI number?
- Tiffany Nguyen's National Provider Identifier (NPI) is 1770840530, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tiffany Nguyen's specialty?
- Tiffany Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tiffany Nguyen located?
- Tiffany Nguyen's practice location on file with NPPES is 12100 Euclid St, Garden Grove, CA 92840-3304.
- What is Tiffany Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tiffany Nguyen is (888) 988-2800.
- Does Tiffany Nguyen accept Medicare?
- Tiffany Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tiffany Nguyen's NPI active?
- Yes — Tiffany Nguyen's NPI (1770840530) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.