Michael Nguyen, MD
NPI 1871671685 · Internal Medicine Physician · Manteca, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Nguyen, MD is a Internal Medicine Physician provider in Manteca, CA (NPI 1871671685).
Provider details
- NPI number
- 1871671685
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A66359 (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 · 118 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 666 | 271 |
| Amlodipine Besylate | 576 | 238 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 278 | 57 |
| Famotidine | 275 | 124 |
| Tamsulosin Hcl | 274 | 100 |
| Lisinopril | 271 | 108 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is Michael Nguyen's NPI number?
- Michael Nguyen's National Provider Identifier (NPI) is 1871671685, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Nguyen's specialty?
- Michael Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Nguyen located?
- Michael Nguyen's practice location on file with NPPES is 1721 W Yosemite Ave, Manteca, CA 95337-5130.
- What is Michael Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Michael Nguyen is (209) 476-2000.
- Does Michael Nguyen accept Medicare?
- Michael Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Nguyen's NPI active?
- Yes — Michael Nguyen's NPI (1871671685) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.