Charles Ian Cooperberg, MD
NPI 1073530655ActiveIndividual· Internal Medicine, Nephrology· Durham, NC
Internal Medicine, Nephrology (MD) with Durham Nephrology Associates PA, practicing in Durham, North Carolina. In 2024 Medicare paid $170,285 for 377 patients, and Part D covered 765 of their prescriptions, 86% of them generic. Fresenius USA Marketing, Inc. was the largest of 10 companies reporting payments in 2025, $488.65 in all, mostly food and beverage. Lists Duke Regional Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1073530655 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Jul 18, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 32098 | NC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 377 |
|---|---|
| Services billed | 4,471 across 37 procedure codes |
| Paid by Medicare | $170,285 |
Part D prescriptions in 2024
| Prescriptions (claims) | 765 · 1,454 30-day fills |
|---|---|
| Patients | 153 |
| Total drug cost | $159,096 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Durham Nephrology Associates PAOxford, NC · 10 clinicians
Hospital affiliations
- Duke Regional HospitalDurham, NC
- Granville Health SystemsOxford, NC
Other facilities
- Fmc - Freedom Lake Dialysis UnitDialysis facility · Durham, NC
- Fms Dialysis Services of OxfordDialysis facility · Oxford, NC
- Fms South Durham Dialysis CenterDialysis facility · Durham, NC
Industry payments (Open Payments)
- 2025$488.65 · 21 payments from 10 companies
- 2024$601.95 · 32 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fresenius USA Marketing, Inc. | $111.43 | 5 |
| Novartis Pharmaceuticals Corporation | $103.76 | 5 |
| Calliditas Therapeutics US Inc. | $63.20 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $55.27 | 2 |
| Mallinckrodt Hospital Products Inc. | $43.74 | 2 |
What the 2025 payments were for
- Food and Beverage$488.65 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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