Yen Dang Nieman, M.D.
NPI 1295825784ActiveIndividual· Ophthalmology· Austin, TX
Ophthalmology (M.D.) in Austin, Texas, trained at University of Texas Medical School at Houston (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $677,641 for 1,748 claims, against $89,248 paid for services in 2024. Rxsight Inc was the largest of 7 companies reporting payments in 2025, $717.68 in all, mostly food and beverage.
Overview
| NPI | 1295825784 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 13, 2006 |
| Last updated in NPPES | Jan 3, 2024 |
| Certified by provider | Jan 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | L6337 | TX |
| Ophthalmology | 207W00000X | E-4146 | AR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 440 |
|---|---|
| Services billed | 941 across 26 procedure codes |
| Paid by Medicare | $89,248 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,748 · 3,668 30-day fills |
|---|---|
| Patients | 470 |
| Total drug cost | $677,641 |
| Generic share | 44% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Ophthalmology |
Medical group
- Texan Eye, PAAustin, TX · 18 clinicians
Industry payments (Open Payments)
- 2025$717.68 · 17 payments from 7 companies
- 2024$831.88 · 22 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Rxsight Inc | $281.33 | 2 |
| Abbvie Inc. | $212.45 | 9 |
| Alcon Vision LLC | $104.15 | 1 |
| Bausch & Lomb Americas Inc. | $35.84 | 2 |
| Dompe US, Inc. | $33.99 | 1 |
What the 2025 payments were for
- Food and Beverage$717.68 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 145 ophthalmologists in Austin · All ophthalmologists in Texas