David Shi-Wei Chang, M.D. M.S.
NPI 1609037837ActiveIndividual· Radiology, Radiation Oncology· Lake Charles, LA
Radiology, Radiation Oncology (M.D. M.S.) in Lake Charles, Louisiana, trained at University of Louisville School of Medicine (class of 2008). In 2024 Medicare paid $79,404 for 162 patients, and Part D covered 342 of their prescriptions, 86% of them generic. Merck Sharp & Dohme LLC was the largest of 5 companies reporting payments in 2025, $239.18 in all, mostly food and beverage.
Overview
| NPI | 1609037837 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. M.S. |
| Sole proprietor | No |
| NPI issued | Jun 20, 2008 |
| Last updated in NPPES | Mar 26, 2024 |
| Certified by provider | Mar 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | MD.206380 | LA |
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 - Radiation Oncology (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 162 |
|---|---|
| Services billed | 1,510 across 26 procedure codes |
| Paid by Medicare | $79,404 |
Part D prescriptions in 2024
| Prescriptions (claims) | 342 · 512 30-day fills |
|---|---|
| Patients | 82 |
| Total drug cost | $7,030 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Louisville School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Radiation Oncology |
Medical group
- Ochsner Clinic LLCNew Orleans, LA · 2,864 clinicians
Hospital affiliations
- Beauregard Memorial HospitalDeridder, LA
- Christus Ochsner Lake Area HospitalLake Charles, LA
- Christus Ochsner St Patrick HospitalLake Charles, LA
- Lake Charles Memorial HospitalLake Charles, LA
- West Calcasieu Cameron HospitalSulphur, LA
Industry payments (Open Payments)
- 2025$239.18 · 6 payments from 5 companies
- 2024$134.35 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $111.51 | 1 |
| Teleflex LLC | $47.87 | 2 |
| Medtronic, Inc. | $41.13 | 1 |
| Myriad Genetic Laboratories, Inc. | $21.39 | 1 |
| C. R. Bard, Inc. & Subsidiaries | $17.28 | 1 |
What the 2025 payments were for
- Food and Beverage$239.18 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Radiology, Radiation Oncology providers in Lake Charles
- 1972931715
- 1114059821