Tu Nguyen, MD
NPI 1740217942 · Internal Medicine Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tu Nguyen, MD is a Internal Medicine Physician provider in Westminster, CA (NPI 1740217942).
Provider details
- NPI number
- 1740217942
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G78838 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
5,650 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 1,050 | $67 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 1,015 | $57 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 851 | $54 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 694 | $55 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 682 | $42 |
| Collection and Interpretation of Physical Parameters Stored in Computers And/Or Transmitted By the Patient And/Or Caregiver to Qualified Health Care Professional, Requiring 30 Minutes Or More, Per 30 Days |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 135 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,151 | 357 |
| Losartan Potassium | 656 | 213 |
| Amlodipine Besylate | 600 | 192 |
| Metformin Hcl | 535 | 157 |
| Alendronate Sodium | 509 | 166 |
| Celecoxib | 465 | 150 |
| Omeprazole | 375 | 93 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,773 across 63 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-26
- Last updated
- 2011-12-12
Frequently asked questions
- What is Tu Nguyen's NPI number?
- Tu Nguyen's National Provider Identifier (NPI) is 1740217942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tu Nguyen's specialty?
- Tu Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tu Nguyen located?
- Tu Nguyen's practice location on file with NPPES is 10362 Bolsa Avenue, Westminster, CA 92683-6763.
- What is Tu Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tu Nguyen is (714) 531-2091.
- Does Tu Nguyen accept Medicare?
- Tu Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tu Nguyen's NPI active?
- Yes — Tu Nguyen's NPI (1740217942) is active in the NPPES registry as of the last update on 2011-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.