David Chang Ishizawar, M.D.
NPI 1326235607ActiveIndividual· Internal Medicine, Advanced Heart Failure and Transplant Cardiology· Raleigh, NC
Internal Medicine, Advanced Heart Failure and Transplant Cardiology (M.D.) in Raleigh, North Carolina, trained at University of Pittsburgh School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $3,589,070 for 1,996 claims, against $72,124 paid for services in 2024. Cvrx, Inc. was the largest of 4 companies reporting payments in 2025, $405.47 in all, mostly food and beverage.
Overview
| NPI | 1326235607 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 1, 2007 |
| Last updated in NPPES | Oct 9, 2023 |
| Certified by provider | Oct 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Advanced Heart Failure and Transplant Cardiology Primary | 207RA0001X | 2023-02189 | NC |
| Internal Medicine, Advanced Heart Failure and Transplant Cardiology | 207RA0001X | 65360 | WI |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | MD434787 | PA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 65360 | WI |
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 - Cardiovascular Disease (Cardiology) (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 256 |
|---|---|
| Services billed | 744 across 24 procedure codes |
| Paid by Medicare | $72,124 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,996 · 3,950 30-day fills |
|---|---|
| Patients | 349 |
| Total drug cost | $3,589,070 |
| Generic share | 62% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Advanced Heart Failure And Transplant Cardiology |
| Telehealth | Offers telehealth |
Medical groups
- University of North Carolina at Chapel HillChapel Hill, NC · 2,052 clinicians
- North Carolina Mg LLCRaleigh, NC · 751 clinicians
Hospital affiliations
- Johnston HealthSmithfield, NC
- Rex HospitalRaleigh, NC
- Unc Health Care WayneGoldsboro, NC
- Unc Health NashRocky Mount, NC
- Unc HospitalsChapel Hill, NC
Industry payments (Open Payments)
- 2025$405.47 · 6 payments from 4 companies
- 2024$135.21 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cvrx, Inc. | $200.83 | 3 |
| Atricure, Inc. | $151.64 | 1 |
| United Therapeutics Corporation | $34.53 | 1 |
| Endotronix, Inc. | $18.47 | 1 |
What the 2025 payments were for
- Food and Beverage$405.47 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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