Tim Nguyen, MD
NPI 1164493607 · Internal Medicine Physician · Sparks, NV
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tim Nguyen, MD is a Internal Medicine Physician provider in Sparks, NV (NPI 1164493607).
Provider details
- NPI number
- 1164493607
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11338 (NV)
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
1,297 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 385 | $124 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 282 | $174 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 131 | $23 |
| Blood Test, Clotting Time85610 | 124 | $4 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 80 | $127 |
| Anticoagulant Management of Patient Taking Warfarin93793 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 114 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 696 | 242 |
| Levothyroxine Sodium | 448 | 136 |
| Losartan Potassium | 412 | 139 |
| Rosuvastatin Calcium | 386 | 123 |
| Amlodipine Besylate | 353 | 119 |
| Lisinopril | 303 | 101 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (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
- 2006-02-01
- Last updated
- 2025-05-14
- Certified
- 2025-05-14
Frequently asked questions
- What is Tim Nguyen's NPI number?
- Tim Nguyen's National Provider Identifier (NPI) is 1164493607, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tim Nguyen's specialty?
- Tim Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tim Nguyen located?
- Tim Nguyen's practice location on file with NPPES is 1525 Los Altos Pkwy, Sparks, NV 89436-6692.
- What is Tim Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tim Nguyen is (775) 982-5000.
- Does Tim Nguyen accept Medicare?
- Tim Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tim Nguyen's NPI active?
- Yes — Tim Nguyen's NPI (1164493607) is active in the NPPES registry as of the last update on 2025-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.