Wendy Ni Ahn, OD
NPI 1932324670ActiveIndividual· Optometrist· Los Altos, CA
Optometrist (OD) in Los Altos, California, trained at University of California - School of Optometry (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $13,240 for 40 claims, against $7,447 paid for services in 2024. Alcon Vision LLC was the largest of 2 companies reporting payments in 2025, $177.53 in all, mostly food and beverage.
Overview
| NPI | 1932324670 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Apr 16, 2007 |
| Last updated in NPPES | Apr 4, 2024 |
| Certified by provider | Apr 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 12738T | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 101 across 8 procedure codes |
| Paid by Medicare | $7,447 |
Part D prescriptions in 2024
| Prescriptions (claims) | 40 · 42 30-day fills |
|---|---|
| Patients | 12 |
| Total drug cost | $13,240 |
Education and affiliations
| Medical school | University of California - School of Optometry |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Optometry |
Industry payments (Open Payments)
- 2025$177.53 · 2 payments from 2 companies
- 2024$167.67 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $158.36 | 1 |
| Bausch & Lomb Americas Inc. | $19.17 | 1 |
What the 2025 payments were for
- Food and Beverage$177.53 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Optometrist providers in Los Altos
- 1295282077
- 1326339813
- 1851827794
- 1760873798
- 1184610941
- 1821297466
- 1144501933
- 1205080728
- 1548651565
- 1770005183
- 1730244682
- 1851691778