Khuong Nguyen, O.D.
NPI 1851441620 · Corneal and Contact Management Optometrist · Westborough, MA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Khuong Nguyen, O.D. is a Corneal and Contact Management Optometrist provider in Westborough, MA (NPI 1851441620).
Provider details
- NPI number
- 1851441620
- Entity type
- Individual
- Primary specialty
- Corneal and Contact Management OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MA4355 (MA)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
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
239 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 Complete Exam of Visual System92014 | 160 | $129 |
| Photography of the Retina92250 | 29 | $37 |
| New Patient Complete Exam of Visual System92004 | 20 | $152 |
| Imaging of Retina92134 | 18 | $42 |
| Imaging of Optic Nerve92133 | 12 | $37 |
Typical Medicare-allowed amounts for these services range $37–$152 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cyclosporine | 336 | 70 |
| Latanoprost | 195 | 50 |
| Cyclosporinebrand: Restasis | 137 | 53 |
| Ketorolac Tromethamine | 95 | 45 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 89 | 52 |
| Lifitegrastbrand: Xiidra | 30 | 17 |
| Timolol Maleate | 29 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$817 across 16 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
- 2007-01-11
- Last updated
- 2020-06-01
- Certified
- 2020-06-01
Frequently asked questions
- What is Khuong Nguyen's NPI number?
- Khuong Nguyen's National Provider Identifier (NPI) is 1851441620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Khuong Nguyen's specialty?
- Khuong Nguyen is listed in the NPPES registry with a primary specialty of Corneal and Contact Management Optometrist (Eye and Vision Services Providers).
- Where is Khuong Nguyen located?
- Khuong Nguyen's practice location on file with NPPES is 1 E Main St, Westborough, MA 01581-1408.
- What is Khuong Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Khuong Nguyen is (508) 366-4500.
- Does Khuong Nguyen accept Medicare?
- Khuong Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Khuong Nguyen's NPI active?
- Yes — Khuong Nguyen's NPI (1851441620) is active in the NPPES registry as of the last update on 2020-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.