Matthew Ryan Barnes, MD
NPI 1699118133ActiveIndividual· Internal Medicine, Gastroenterology· Greenville, SC
Internal Medicine, Gastroenterology (MD) in Greenville, South Carolina, trained at University of Tennessee, Hsc, College of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $446,762 for 1,360 claims, against $151,488 paid for services in 2024. Genentech, Inc. was the largest of 19 companies reporting payments in 2025, $3,243 in all, mostly food and beverage.
Overview
| NPI | 1699118133 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 15, 2013 |
| Last updated in NPPES | May 20, 2024 |
| Certified by provider | May 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 83498 | SC |
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 - Gastroenterology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 483 |
|---|---|
| Services billed | 3,328 across 56 procedure codes |
| Paid by Medicare | $151,488 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,360 · 2,603 30-day fills |
|---|---|
| Patients | 397 |
| Total drug cost | $446,762 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Gastroenterology |
Medical group
- Gastroenterology Associates, PAClemson, SC · 57 clinicians
Hospital affiliations
- Pelham Medical CenterGreer, SC
- Prisma Health Baptist Easley HospitalEasley, SC
- Prisma Health Greenville Memorial HospitalGreenville, SC
- Prisma Health Oconee Memorial HospitalSeneca, SC
- St Francis-DowntownGreenville, SC
Industry payments (Open Payments)
- 2025$3,243 · 84 payments from 19 companies
- 2024$2,363 · 56 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genentech, Inc. | $1,734 | 4 |
| Abbvie Inc. | $374.67 | 24 |
| Ipsen Biopharmaceuticals, Inc | $191.61 | 9 |
| Madrigal Pharmaceuticals | $121.45 | 6 |
| Regeneron Healthcare Solutions, Inc. | $113.77 | 5 |
What the 2025 payments were for
- Food and Beverage$1,994 · 81 payments
- Travel and Lodging$1,218 · 2 payments
- Education$31.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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