Ann K. Buikema Wiarda, MD
NPI 1538146246ActiveIndividual· Ophthalmology· Warsaw, IN
Ophthalmology (MD) in Warsaw, Indiana, trained at Northwestern University Feinberg Medical School (class of 1995). In 2024 Medicare paid $919,439 for 886 patients, and Part D covered 2,147 of their prescriptions, 74% of them generic. Alcon Vision LLC was the largest of 10 companies reporting payments in 2025, $1,753 in all, mostly food and beverage.
Overview
| NPI | 1538146246 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 23, 2005 |
| Last updated in NPPES | Jun 12, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 01047556A | IN |
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 - Ophthalmology (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 886 |
|---|---|
| Services billed | 7,093 across 48 procedure codes |
| Paid by Medicare | $919,439 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,147 · 4,416 30-day fills |
|---|---|
| Patients | 552 |
| Total drug cost | $128,463 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Ophthalmology |
Medical group
- Grossnickle Eye Center IncWarsaw, IN · 12 clinicians
Industry payments (Open Payments)
- 2025$1,753 · 36 payments from 10 companies
- 2024$3,861 · 30 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $931.87 | 18 |
| Glaukos Corporation | $233.88 | 3 |
| Rxsight Inc | $144.97 | 2 |
| Regeneron Healthcare Solutions, Inc. | $123.06 | 1 |
| Abbvie Inc. | $91.48 | 5 |
What the 2025 payments were for
- Food and Beverage$1,753 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Warsaw
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- 1528061363