Viet Dang, M.D.
NPI 1548276454 · Ophthalmology Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Viet Dang, M.D. is a Ophthalmology Physician provider in Westminster, CA (NPI 1548276454).
Provider details
- NPI number
- 1548276454
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
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
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
936 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 | 332 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 150 | $138 |
| Exam of Visual Field With Extended Testing92083 | 144 | $71 |
| Imaging of Optic Nerve92133 | 143 | $37 |
| Established Patient Complete Exam of Visual System92014 | 79 | $139 |
| New Patient Complete Exam of Visual System92004 | 57 | $164 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,342 | 214 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 466 | 87 |
| Timolol Maleate | 173 | 35 |
| Bimatoprostbrand: Lumigan | 152 | 22 |
| Travoprost | 87 | 13 |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 74 | 19 |
| Brinzolamide | 70 | 23 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15 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
- 2006-07-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Viet Dang's NPI number?
- Viet Dang's National Provider Identifier (NPI) is 1548276454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viet Dang's specialty?
- Viet Dang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Viet Dang located?
- Viet Dang's practice location on file with NPPES is 10301 Bolsa Ave Ste 104, Westminster, CA 92683-6784.
- What is Viet Dang's phone number?
- The practice phone number listed in the NPPES registry for Viet Dang is (714) 775-0898.
- Does Viet Dang accept Medicare?
- Viet Dang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Viet Dang's NPI active?
- Yes — Viet Dang's NPI (1548276454) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.