John W. Gnann Jr., MD
NPI 1467498659ActiveIndividual· Internal Medicine, Infectious Disease· Charleston, SC
Internal Medicine, Infectious Disease (MD) in Charleston, South Carolina, trained at Duke University School of Medicine (class of 1978). Mostly services rather than prescriptions: Medicare paid $3,916 for 39 patients in 2024, with only 25 Part D claims. Glaxosmithkline, LLC. was the largest of 3 companies reporting payments in 2025, $10,073 in all, mostly consulting fees.
Overview
| NPI | 1467498659 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 22, 2006 |
| Last updated in NPPES | Oct 22, 2020 |
| Certified by provider | Oct 22, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | AL35447 | SC |
| Internal Medicine, Infectious Disease | 207RI0200X | 08890 | AL |
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 - Internal Medicine (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 44 across 7 procedure codes |
| Paid by Medicare | $3,916 |
Part D prescriptions in 2024
| Prescriptions (claims) | 25 · 33 30-day fills |
|---|---|
| Total drug cost | $2,949 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Infectious Disease |
| Telehealth | Offers telehealth |
Medical group
- University Medical Associates of the Medical University of South CarolCharleston, SC · 1,668 clinicians
Industry payments (Open Payments)
- 2025$10,073 · 6 payments from 3 companies
- 2024$7,500 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $4,648 | 4 |
| Biocryst Pharmaceuticals, Inc. | $3,000 | 1 |
| Modernatx, Inc. | $2,425 | 1 |
What the 2025 payments were for
- Consulting Fee$10,073 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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