Colby H. Grossman, M.D.
NPI 1619952371ActiveIndividual· Internal Medicine· Summerville, SC
Internal Medicine (M.D.) in Summerville, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $1,359,545 for 7,582 claims, against $270,276 paid for services in 2024. Amgen Inc. was the largest of 15 companies reporting payments in 2025, $665.36 in all, mostly food and beverage.
Overview
| NPI | 1619952371 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 14, 2005 |
| Last updated in NPPES | Jun 20, 2024 |
| Certified by provider | Jun 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 12448 | 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 | 281 |
|---|---|
| Services billed | 7,308 across 51 procedure codes |
| Paid by Medicare | $270,276 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,582 · 17,441 30-day fills |
|---|---|
| Patients | 270 |
| Total drug cost | $1,359,545 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Bon Secours-St Francis Xavier HospitalCharleston, SC
- Roper HospitalCharleston, SC
- Roper St Francis Hospital-Berkeley IncSummerville, SC
- Trident Medical CenterCharleston, SC
Other facilities
- Amedisys Home Health of CharlestonHome health agency · North Charleston, SC
- Interim HealthcareHome health agency · North Charleston, SC
Industry payments (Open Payments)
- 2025$665.36 · 47 payments from 15 companies
- 2024$734.94 · 37 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $182.83 | 23 |
| Verity Pharmaceuticals Inc. | $79.06 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $72.50 | 3 |
| Astrazeneca Pharmaceuticals LP | $48.73 | 3 |
| Tolmar, Inc. | $46.47 | 2 |
What the 2025 payments were for
- Food and Beverage$665.36 · 47 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Summerville · All internal medicine physicians in South Carolina