David P. Chang, M.D.
NPI 1487638581ActiveIndividual· Internal Medicine· Easley, SC
Internal Medicine (M.D.) in Easley, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $1,983,835 for 19,783 claims, against $269,340 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 22 companies reporting payments in 2025, $1,553 in all, mostly food and beverage.
Overview
| NPI | 1487638581 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 1, 2005 |
| Last updated in NPPES | Dec 5, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20227 | SC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 521 |
|---|---|
| Services billed | 6,453 across 49 procedure codes |
| Paid by Medicare | $269,340 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,783 · 40,985 30-day fills |
|---|---|
| Patients | 952 |
| Total drug cost | $1,983,835 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Internal Medicine |
Medical group
- Prisma Health University Medical GroupGreenville, SC · 2,493 clinicians
Hospital affiliations
- Prisma Health Patewood HospitalGreenville, SC
- Prisma Health Baptist Easley HospitalEasley, SC
- Prisma Health Greenville Memorial HospitalGreenville, SC
- Prisma Health Oconee Memorial HospitalSeneca, SC
- St Francis-DowntownGreenville, SC
Other facilities
- Amedisys Home Health of ClintonHome health agency · Clinton, SC
- Centerwell Home HealthHome health agency · Greenville, SC
- Interim Healthcare of the UpstateHome health agency · Greenville, SC
- Prisma Health Home Health-UpstateHome health agency · Greenville, SC
- Presbyterian Home of SC - FoothillsNursing home · Easley, SC
Industry payments (Open Payments)
- 2025$1,553 · 95 payments from 22 companies
- 2024$1,921 · 113 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $227.05 | 14 |
| Abbvie Inc. | $175.84 | 13 |
| Pfizer Inc. | $173.54 | 9 |
| Novo Nordisk Inc | $166.05 | 12 |
| Lilly USA, LLC | $149.34 | 12 |
What the 2025 payments were for
- Food and Beverage$1,553 · 95 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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