Tan Nguyen, MD
NPI 1093705485 · Family Medicine Physician · Woodland, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tan Nguyen, MD is a Family Medicine Physician provider in Woodland, CA (NPI 1093705485).
Provider details
- NPI number
- 1093705485
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A88448 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
511 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 250 | $134 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 118 | $94 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 64 | $17 |
| Administration of Influenza Virus VaccineG0008 | 25 | $34 |
| Automated Urinalysis Test81003 | 22 | $2 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 184 | 61 |
| Lisinopril | 134 | 40 |
| Losartan Potassium | 112 | 36 |
| Amlodipine Besylate | 97 | 31 |
| Levothyroxine Sodium | 84 | 27 |
| Omeprazole | 59 | 19 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-26
- Last updated
- 2024-02-16
- Certified
- 2024-02-16
Frequently asked questions
- What is Tan Nguyen's NPI number?
- Tan Nguyen's National Provider Identifier (NPI) is 1093705485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tan Nguyen's specialty?
- Tan Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tan Nguyen located?
- Tan Nguyen's practice location on file with NPPES is 475 Pioneer Ave Ste 400, Woodland, CA 95776-4905.
- What is Tan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tan Nguyen is (530) 406-5600.
- Does Tan Nguyen accept Medicare?
- Tan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tan Nguyen's NPI active?
- Yes — Tan Nguyen's NPI (1093705485) is active in the NPPES registry as of the last update on 2024-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.