Grant Nash Corning, MD
NPI 1033259114ActiveIndividual· Ophthalmology· Ada, OK
Ophthalmology (MD) in Ada, Oklahoma, trained at University of Oklahoma College of Medicine (class of 2006). In 2024 Medicare paid $519,964 for 1,115 patients, and Part D covered 3,415 of their prescriptions, 62% of them generic. Alcon Vision LLC reported $163.67 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1033259114 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 7, 2007 |
| Last updated in NPPES | Jan 17, 2023 |
| Certified by provider | Nov 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 25023 | OK |
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 (OK); Practitioner - Ophthalmology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,115 |
|---|---|
| Services billed | 6,595 across 49 procedure codes |
| Paid by Medicare | $519,964 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,415 · 4,204 30-day fills |
|---|---|
| Patients | 781 |
| Total drug cost | $428,184 |
| Generic share | 62% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Ophthalmology |
Hospital affiliation
- Mercy Hospital AdaAda, OK
Industry payments (Open Payments)
- 2025$163.67 · 14 payments from 1 company
- 2024$258.64 · 15 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $163.67 | 14 |
What the 2025 payments were for
- Food and Beverage$163.67 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Ada
- 1205243631