John B. Calhoun Jr., M.D.
NPI 1770845141ActiveIndividual· Internal Medicine· Charleston, SC
Internal Medicine (M.D.) in Charleston, South Carolina, trained at Medical College of Georgia School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $1,491,033 for 16,467 claims, against $229,668 paid for services in 2024. Abiomed was the largest of 8 companies reporting payments in 2025, $360.43 in all, mostly food and beverage.
Overview
| NPI | 1770845141 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 12, 2012 |
| Last updated in NPPES | Jun 12, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | LL34731 | 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 - Internal Medicine (AL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 707 |
|---|---|
| Services billed | 7,259 across 92 procedure codes |
| Paid by Medicare | $229,668 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16,467 · 30,910 30-day fills |
|---|---|
| Patients | 1,029 |
| Total drug cost | $1,491,033 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Medical College of Georgia School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Internal Medicine |
Medical group
- Southern Clinic PCDothan, AL · 25 clinicians
Hospital affiliations
- Flowers HospitalDothan, AL
- Southeast Health Medical CenterDothan, AL
Other facilities
- Amedisys Home HealthHome health agency · Dothan, AL
- Centerwell Home HealthHome health agency · Dothan, AL
- Enhabit Home HealthHome health agency · Dothan, AL
- Nhc HomecareHome health agency · Chipley, FL
- Southeast Alabama HomecareHome health agency · Dothan, AL
- GentivaHospice · Enterprise, AL
Industry payments (Open Payments)
- 2025$360.43 · 14 payments from 8 companies
- 2024$206.45 · 12 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $114.93 | 2 |
| Amgen Inc. | $83.59 | 5 |
| Medtronic, Inc. | $59.46 | 1 |
| Glaxosmithkline, LLC. | $38.03 | 2 |
| Inspire Medical Systems, Inc. | $18.71 | 1 |
What the 2025 payments were for
- Food and Beverage$360.43 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Charleston
- 1811159734
- 1386970333
- 1174286348
- 1821029646
- 1710095468
- 1740833938
- 1215043872
- 1922045764
- 1336932870
- 1033006747
- 1609561935
- 1932975711