Robert J. Knox, M.D.
NPI 1790782035ActiveIndividual· Ophthalmology· Portsmouth, OH
Ophthalmology (M.D.) in Portsmouth, Ohio, trained at University of Missouri, Columbia School of Medicine (class of 2000). In 2024 Medicare paid $241,483 for 430 patients, and Part D covered 753 of their prescriptions, 76% of them generic. Regeneron Healthcare Solutions, Inc. was the largest of 6 companies reporting payments in 2025, $224.32 in all, mostly food and beverage.
Overview
| NPI | 1790782035 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 1, 2005 |
| Last updated in NPPES | Oct 21, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 35-077740 | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 430 |
|---|---|
| Services billed | 2,247 across 51 procedure codes |
| Paid by Medicare | $241,483 |
Part D prescriptions in 2024
| Prescriptions (claims) | 753 · 1,176 30-day fills |
|---|---|
| Patients | 160 |
| Total drug cost | $84,672 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of Missouri, Columbia School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Ophthalmology |
Hospital affiliations
- Kings Daughters Medical Center OhioPortsmouth, OH
- Southern Ohio Medical CenterPortsmouth, OH
Industry payments (Open Payments)
- 2025$224.32 · 10 payments from 6 companies
- 2024$131.89 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $54.16 | 2 |
| Alcon Vision LLC | $49.48 | 2 |
| Astellas Pharma US Inc | $41.82 | 2 |
| Amgen Inc. | $33.65 | 2 |
| Tarsus Pharmaceuticals, Inc. | $28.04 | 1 |
What the 2025 payments were for
- Food and Beverage$224.32 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Portsmouth
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- 1225085251
- 1386646644