Chang O Son, M.D.
NPI 1396016838ActiveIndividual· Internal Medicine, Hematology & Oncology· Fayetteville, NC
Internal Medicine, Hematology & Oncology (M.D.) with Cumberland County Hospital System Inc and 2 other groups, practicing in Fayetteville, North Carolina. Their prescriptions cost Medicare Part D more than their services did: $1,372,355 for 325 claims, against $20,477 paid for services in 2024. Janssen Biotech, Inc. was the largest of 5 companies reporting payments in 2025, $188.63 in all, mostly food and beverage. Lists Cape Fear Valley Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1396016838 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 13, 2012 |
| Last updated in NPPES | Apr 8, 2026 |
| Certified by provider | Apr 8, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | MD60764798 | NC |
| Internal Medicine, Hematology | 207RH0000X | 2017-01958 | NC |
| Internal Medicine, Medical Oncology | 207RX0202X | 2017-01958 | NC |
| Internal Medicine | 207R00000X | 0101255714 | NC |
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 - Medical Oncology (NC); Practitioner - Neurology (ND); Practitioner - Internal Medicine (VA); Practitioner - Hematology/Oncology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 165 |
|---|---|
| Services billed | 285 across 8 procedure codes |
| Paid by Medicare | $20,477 |
Part D prescriptions in 2024
| Prescriptions (claims) | 325 · 404 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $1,372,355 |
| Generic share | 57% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Medical Oncology |
Medical groups
- Cumberland County Hospital System IncFayetteville, NC · 574 clinicians
- St Alexius Medical CenterBismarck, ND · 238 clinicians
- Danville Physician Practices LLCAmissville, VA · 177 clinicians
Hospital affiliations
- Cape Fear Valley Medical CenterFayetteville, NC
- Sovah Health DanvilleDanville, VA
Other facilities
- Highsmith Rainey Memorial HospitalLong-term care hospital · Fayetteville, NC
Industry payments (Open Payments)
- 2025$188.63 · 9 payments from 5 companies
- 2024$478.77 · 22 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $83.05 | 4 |
| Adaptive Biotechnologies Corporation | $53.20 | 2 |
| Glaxosmithkline, LLC. | $20.12 | 1 |
| Celgene Corporation | $16.75 | 1 |
| E.R. Squibb & Sons, L.L.C. | $15.51 | 1 |
What the 2025 payments were for
- Food and Beverage$188.63 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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