Tamuyen Nguyen, M.D.
NPI 1710041686 · Dermatology Physician · Upland, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tamuyen Nguyen, M.D. is a Dermatology Physician provider in Upland, CA (NPI 1710041686).
Provider details
- NPI number
- 1710041686
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A80098 (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
19 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
562 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 369 | $94 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 57 | $115 |
| Biopsy of Related Skin Growth, First Growth11102 | 44 | $103 |
| Destruction of Skin Growth, 1-14 Growths17110 | 35 | $118 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 31 | $68 |
| Destruction of Precancer Skin Growth, 2-14 Growths |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 82 | 33 |
| Triamcinolone Acetonide | 21 | 11 |
| Fluocinolone Acetonide | 20 | — |
| Montelukast Sodium | 15 | — |
| Erythromycin/Benzoyl Peroxidebrand: Erythromycin-Benzoyl Peroxide | 13 | — |
| Adalimumabbrand: Humira(cf) Pen | 13 | — |
| Tretinoin | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,308 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
- 2006-12-21
- Last updated
- 2011-08-08
Frequently asked questions
- What is Tamuyen Nguyen's NPI number?
- Tamuyen Nguyen's National Provider Identifier (NPI) is 1710041686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tamuyen Nguyen's specialty?
- Tamuyen Nguyen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Tamuyen Nguyen located?
- Tamuyen Nguyen's practice location on file with NPPES is 1310 San Bernardino Rd, Upland, CA 91786-4979.
- What is Tamuyen Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tamuyen Nguyen is (909) 946-8600.
- Does Tamuyen Nguyen accept Medicare?
- Tamuyen Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tamuyen Nguyen's NPI active?
- Yes — Tamuyen Nguyen's NPI (1710041686) is active in the NPPES registry as of the last update on 2011-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.