Andrew W. Nahas, OD
NPI 1427052927ActiveIndividual· Optometrist· Viroqua, WI
Optometrist (OD) in Viroqua, Wisconsin, trained at Pennsylvania College of Optometry (class of 1994). In 2024 Medicare paid $63,498 for 616 patients, and Part D covered 751 of their prescriptions, 62% of them generic. Alcon Vision LLC was the largest of 2 companies reporting payments in 2025, $250.97 in all, mostly food and beverage.
Overview
| NPI | 1427052927 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Jun 13, 2005 |
| Last updated in NPPES | Feb 1, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 2603 | WI |
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 - Optometry (IA); Practitioner - Optometry (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 616 |
|---|---|
| Services billed | 5,199 across 19 procedure codes |
| Paid by Medicare | $63,498 |
Part D prescriptions in 2024
| Prescriptions (claims) | 751 · 1,200 30-day fills |
|---|---|
| Patients | 203 |
| Total drug cost | $68,967 |
| Generic share | 62% of claims |
Education and affiliations
| Medical school | Pennsylvania College of Optometry |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Optometry |
Medical group
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
Industry payments (Open Payments)
- 2025$250.97 · 2 payments from 2 companies
- 2024$160.36 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $125.98 | 1 |
| Dompe US, Inc. | $124.99 | 1 |
What the 2025 payments were for
- Food and Beverage$250.97 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other optometrists in Viroqua
- 1851344204
- 1093757320