Jon E. Mark, O.D.
NPI 1508869942ActiveIndividual· Optometrist· Warsaw, IN
Optometrist (O.D.) in Warsaw, Indiana, trained at Indiana University - School of Optometry (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $120,567 for 1,034 claims, against $65,125 paid for services in 2024. Abbvie Inc. was the largest of 3 companies reporting payments in 2025, $175.19 in all, mostly food and beverage.
Overview
| NPI | 1508869942 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | May 31, 2005 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 18002230A | 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 | 552 |
|---|---|
| Services billed | 1,260 across 23 procedure codes |
| Paid by Medicare | $65,125 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,034 · 2,011 30-day fills |
|---|---|
| Patients | 251 |
| Total drug cost | $120,567 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | Indiana University - School of Optometry |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Optometry |
Medical group
- Grossnickle Eye Center IncWarsaw, IN · 12 clinicians
Industry payments (Open Payments)
- 2025$175.19 · 9 payments from 3 companies
- 2024$158.94 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $115.33 | 6 |
| Tarsus Pharmaceuticals, Inc. | $45.32 | 2 |
| Coopervision Inc. | $14.54 | 1 |
What the 2025 payments were for
- Food and Beverage$175.19 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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