Gregg M. Kaiser, MD
NPI 1386627925ActiveIndividual· Ophthalmology· Greenville, SC
Ophthalmology (MD) in Greenville, South Carolina, trained at University of Tennessee, Hsc, College of Medicine (class of 1989). In 2024 Medicare paid $2,834,592 for 1,236 patients, and Part D covered 781 of their prescriptions, 63% of them generic. Astellas Pharma US Inc was the largest of 7 companies reporting payments in 2025, $519.53 in all, mostly food and beverage.
Overview
| NPI | 1386627925 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 29, 2005 |
| Last updated in NPPES | Oct 29, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 19191 | SC |
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 - Ophthalmology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,236 |
|---|---|
| Services billed | 37,054 across 44 procedure codes |
| Paid by Medicare | $2,834,592 |
Part D prescriptions in 2024
| Prescriptions (claims) | 781 · 1,259 30-day fills |
|---|---|
| Patients | 226 |
| Total drug cost | $53,163 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Ophthalmology |
Medical group
- Retina Consultants of Carolina, PAGreenville, SC · 11 clinicians
Hospital affiliations
- Anmed HealthAnderson, SC
- St Francis-DowntownGreenville, SC
Industry payments (Open Payments)
- 2025$519.53 · 23 payments from 7 companies
- 2024$372.94 · 15 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $177.15 | 8 |
| Genentech USA, Inc. | $107.64 | 5 |
| Regeneron Healthcare Solutions, Inc. | $74.14 | 3 |
| Apellis Pharmaceuticals, Inc. | $60.99 | 3 |
| Ani Pharmaceuticals, Inc. | $59.47 | 2 |
What the 2025 payments were for
- Food and Beverage$519.53 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 64 ophthalmologists in Greenville · All ophthalmologists in South Carolina