Karen Grante Bonnanzio, O.D.
NPI 1508955873ActiveIndividual· Optometrist· Stratford, CT
Optometrist (O.D.) in Stratford, Connecticut, trained at New England College of Optometry (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $89,825 for 205 claims, against $11,174 paid for services in 2024. Bausch & Lomb Americas Inc. was the largest of 10 companies reporting payments in 2025, $734.60 in all, mostly food and beverage.
Overview
| NPI | 1508955873 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Oct 12, 2006 |
| Last updated in NPPES | Oct 13, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 002346 | CT |
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 (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 97 |
|---|---|
| Services billed | 199 across 8 procedure codes |
| Paid by Medicare | $11,174 |
Part D prescriptions in 2024
| Prescriptions (claims) | 205 · 414 30-day fills |
|---|---|
| Patients | 70 |
| Total drug cost | $89,825 |
| Generic share | 47% of claims |
Education and affiliations
| Medical school | New England College of Optometry |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Optometry |
Medical groups
- Oronoque Eye Care Inc.Stratford, CT · 4 clinicians
- Oec Derby LLCDerby, CT · 4 clinicians
- Oec Waterbury LLCWaterbury, CT · 3 clinicians
Industry payments (Open Payments)
- 2025$734.60 · 21 payments from 10 companies
- 2024$765.68 · 20 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $191.58 | 5 |
| Lkc Technologies, Inc. | $139.23 | 1 |
| Glaukos Corporation | $120.00 | 1 |
| Johnson & Johnson Vision Care, Inc. | $78.79 | 4 |
| Tarsus Pharmaceuticals, Inc. | $57.72 | 3 |
What the 2025 payments were for
- Food and Beverage$734.60 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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