Quick answers
- Does Nghiem Duong accept Medicare assignment?
- Yes. Medicare's clinician data says Nghiem Duong accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Nghiem Duong see?
- In 2024, CMS data shows 94 Original Medicare patients and 273 services for Nghiem Duong. This counts Original Medicare only and measures volume, not quality.
- What is Nghiem Duong's NPI number?
- 1568818953. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Nghiem Duong, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 94 |
|---|---|
| Services billed to Medicare | 273 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient problem focused exam of visual system (92012)80 services
- Photography of the retina (92250)60 services
- Established patient complete exam of visual system (92014)51 services
- New patient complete exam of visual system (92004)17 services
- Measurement of retinal and optic nerve function (92273)13 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure69%
- Arthritis46%
- Diabetes30%
- Ischemic heart disease21%
- Atrial fibrillation21%
Practice locations
Addresses where Nghiem Duong is enrolled with Medicare (CMS data updated October 2, 2026).
- 1284 W Van Alstyne PkwyVan Alstyne, TX 75495 (903) 482‑0090
- 4150 E Renner RdRichardson, TX 75082 (972) 250‑0700
- 4150 E Renner Rd, Suite 300 Perception Eyecare and EyewearRichardson, TX 75082
Group practices
Medicare enrollment lists Nghiem Duong as a member of these groups (CMS data updated October 2, 2026).
- Knguyen Eyecare PLLC3 clinicians in the group
- Van Alstyne Eye Care PLLC3 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Other clinicians in Knguyen Eyecare PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of Houston - College Of Optometry |
| Graduation year | 2016 (10 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568818953 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians