Robert William Cain, MD
NPI 1083672745ActiveIndividual· Internal Medicine· Charleston, SC
Internal Medicine (MD) in Charleston, South Carolina, trained at Vanderbilt University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $531,101 for 7,168 claims, against $134,161 paid for services in 2024. Glaxosmithkline, LLC. reported $23.56 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1083672745 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 3, 2006 |
| Last updated in NPPES | Apr 8, 2025 |
| Certified by provider | Apr 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 13435 | 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 | 381 |
|---|---|
| Services billed | 2,652 across 30 procedure codes |
| Paid by Medicare | $134,161 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,168 · 17,330 30-day fills |
|---|---|
| Patients | 636 |
| Total drug cost | $531,101 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Vanderbilt University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Internal Medicine |
Medical group
- Roper Saint Francis Physicians NetworkN Charleston, SC · 528 clinicians
Industry payments (Open Payments)
- 2025$23.56 · 1 payment from 1 company
- 2024$441.02 · 21 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $23.56 | 1 |
What the 2025 payments were for
- Food and Beverage$23.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 466 internal medicine physicians in Charleston · All internal medicine physicians in South Carolina