Nelson Jen An Chao, MD
NPI 1215951587ActiveIndividual· Internal Medicine, Medical Oncology· Durham, NC
Internal Medicine, Medical Oncology (MD) in Durham, North Carolina, trained at Yale University School of Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $626,903 for 177 claims, against $17,944 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 4 companies reporting payments in 2025, $954.89 in all, mostly consulting fees.
Overview
| NPI | 1215951587 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Sep 19, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 96-01574 | 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 - Hematology/Oncology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 233 across 11 procedure codes |
| Paid by Medicare | $17,944 |
Part D prescriptions in 2024
| Prescriptions (claims) | 177 · 200 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $626,903 |
| Generic share | 67% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Medical Oncology |
Medical group
- Duke Health Integrated Practice, IncDurham, NC · 3,185 clinicians
Hospital affiliation
- Duke University HospitalDurham, NC
Industry payments (Open Payments)
- 2025$954.89 · 5 payments from 4 companies
- 2024$1,722 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $450.00 | 1 |
| National Marrow Donor Program | $406.10 | 2 |
| Incyte Corporation | $80.12 | 1 |
| Celgene Corporation | $18.67 | 1 |
What the 2025 payments were for
- Consulting Fee$450.00 · 1 payment
- Travel and Lodging$347.20 · 1 payment
- Food and Beverage$157.69 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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