Gregory G. Kalkofen, OD
NPI 1669485801ActiveIndividual· Optometrist· Clinton Twp, MI
Optometrist (OD) with Optometry PC, practicing in Clinton Twp, Michigan. Their prescriptions cost Medicare Part D more than their services did: $40,644 for 311 claims, against $16,623 paid for services in 2024. Coopervision Inc. was the largest of 3 companies reporting payments in 2025, $152.96 in all, mostly food and beverage.
Overview
| NPI | 1669485801 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Aug 15, 2006 |
| Last updated in NPPES | Mar 11, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 4901003953 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 211 |
|---|---|
| Services billed | 324 across 13 procedure codes |
| Paid by Medicare | $16,623 |
Part D prescriptions in 2024
| Prescriptions (claims) | 311 · 489 30-day fills |
|---|---|
| Patients | 93 |
| Total drug cost | $40,644 |
| Generic share | 63% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Optometry |
Medical group
- Optometry PCClinton Township, MI · 4 clinicians
Industry payments (Open Payments)
- 2025$152.96 · 9 payments from 3 companies
- 2024$77.82 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Coopervision Inc. | $101.15 | 6 |
| Alcon Vision LLC | $32.76 | 2 |
| Bausch & Lomb Americas Inc. | $19.05 | 1 |
What the 2025 payments were for
- Food and Beverage$152.96 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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