Ryan Nelson Mercer, MD
NPI 1598129298ActiveIndividual· Ophthalmology· Columbia, SC
Ophthalmology (MD) in Columbia, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $685,099 for 2,090 claims, against $342,214 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $1,796 in all, mostly food and beverage.
Overview
| NPI | 1598129298 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 8, 2016 |
| Last updated in NPPES | Jul 7, 2021 |
| Certified by provider | Jul 7, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 39681 | SC |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 | 989 |
|---|---|
| Services billed | 3,201 across 56 procedure codes |
| Paid by Medicare | $342,214 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,090 · 3,569 30-day fills |
|---|---|
| Patients | 470 |
| Total drug cost | $685,099 |
| Generic share | 46% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Ophthalmology |
Medical group
- The Eye Center PAColumbia, SC · 6 clinicians
Hospital affiliations
- Musc Health Columbia Medical Center DowntownColumbia, SC
- Prisma Health Richland HospitalColumbia, SC
Industry payments (Open Payments)
- 2025$1,796 · 76 payments from 15 companies
- 2024$2,348 · 92 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $577.46 | 19 |
| Alcon Vision LLC | $267.40 | 14 |
| Sun Pharmaceutical Industries Inc. | $149.81 | 10 |
| Biotissue Holdings Inc. | $126.59 | 1 |
| Bausch & Lomb Americas Inc. | $117.48 | 6 |
What the 2025 payments were for
- Food and Beverage$1,796 · 76 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 56 ophthalmologists in Columbia · All ophthalmologists in South Carolina