Gregory F. Zink, O.D.
NPI 1144232794ActiveIndividual· Optometrist· Fort Wayne, IN
Optometrist (O.D.) in Fort Wayne, Indiana, trained at Indiana University - School of Optometry (class of 1994). In 2024 Medicare paid $88,184 for 856 patients, and Part D covered 908 of their prescriptions, 69% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $150.26 in all, mostly food and beverage.
Overview
| NPI | 1144232794 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Aug 12, 2006 |
| Last updated in NPPES | Jan 6, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 18002715A | IN |
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 (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 856 |
|---|---|
| Services billed | 1,723 across 22 procedure codes |
| Paid by Medicare | $88,184 |
Part D prescriptions in 2024
| Prescriptions (claims) | 908 · 1,479 30-day fills |
|---|---|
| Patients | 350 |
| Total drug cost | $98,502 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | Indiana University - School of Optometry |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Optometry |
Medical group
- Grossnickle Eye Center IncWarsaw, IN · 12 clinicians
Hospital affiliations
- Kosciusko Community HospitalWarsaw, IN
- Parkview Whitley HospitalColumbia City, IN
Industry payments (Open Payments)
- 2025$150.26 · 7 payments from 4 companies
- 2024$112.89 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $60.00 | 3 |
| Dompe US, Inc. | $52.22 | 2 |
| Tarsus Pharmaceuticals, Inc. | $21.76 | 1 |
| Alcon Vision LLC | $16.28 | 1 |
What the 2025 payments were for
- Food and Beverage$150.26 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 152 optometrists in Fort Wayne · All optometrists in Indiana