Tien Nguyen, MD
NPI 1396741351 · Dermatology Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tien Nguyen, MD is a Dermatology Physician provider in Fountain Valley, CA (NPI 1396741351).
Provider details
- NPI number
- 1396741351
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20979 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
9,904 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 | 2,569 | $130 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,735 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,393 | $92 |
| Destruction of Skin Growth, 1-14 Growths17110 | 981 | $120 |
| Destruction of Skin Growth, 15 Or More Growths17111 | 624 | $140 |
| Destruction of Precancer Skin Growth, 1 Growth17000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mupirocin | 608 | 474 |
| Triamcinolone Acetonide | 537 | 284 |
| Cephalexin | 453 | 394 |
| Dupilumabbrand: Dupixent Pen | 298 | 41 |
| Ixekizumabbrand: Taltz Autoinjector | 234 | 27 |
| Ketoconazole | 228 | 86 |
| Doxycycline Hyclate | 227 | 110 |
| Fluocinonide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$258,980 across 475 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
- 2005-06-24
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is Tien Nguyen's NPI number?
- Tien Nguyen's National Provider Identifier (NPI) is 1396741351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tien Nguyen's specialty?
- Tien Nguyen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Tien Nguyen located?
- Tien Nguyen's practice location on file with NPPES is 17271 Brookhurst St, Fountain Valley, CA 92708-3701.
- What is Tien Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tien Nguyen is (714) 531-2966.
- Does Tien Nguyen accept Medicare?
- Tien Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tien Nguyen's NPI active?
- Yes — Tien Nguyen's NPI (1396741351) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.