Gary Joseph Barrett, MD
NPI 1578571592ActiveIndividual· Internal Medicine· Loris, SC
Internal Medicine (MD) in Loris, South Carolina, trained at Medical College of Pennsylvania (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $674,384 for 8,631 claims, against $73,379 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 21 companies reporting payments in 2025, $887.25 in all, mostly food and beverage.
Overview
| NPI | 1578571592 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 4, 2006 |
| Last updated in NPPES | Feb 1, 2021 |
| Certified by provider | Feb 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | SC11051 | 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 - Internal Medicine (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 225 |
|---|---|
| Services billed | 1,323 across 35 procedure codes |
| Paid by Medicare | $73,379 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,631 · 20,357 30-day fills |
|---|---|
| Patients | 459 |
| Total drug cost | $674,384 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Medical College of Pennsylvania |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Internal Medicine |
Medical group
- McLeod Physician Associates IILittle River, SC · 550 clinicians
Hospital affiliation
- McLeod Loris HospitalLoris, SC
Other facilities
- Amedisys Home Health of ConwayHome health agency · Conway, SC
Industry payments (Open Payments)
- 2025$887.25 · 45 payments from 21 companies
- 2024$557.64 · 30 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $130.50 | 4 |
| Astrazeneca Pharmaceuticals LP | $95.19 | 6 |
| Ani Pharmaceuticals, Inc. | $67.89 | 3 |
| Novo Nordisk Inc | $67.06 | 3 |
| Amgen Inc. | $61.29 | 4 |
What the 2025 payments were for
- Food and Beverage$887.25 · 45 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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