Hannah L. Chang, MD
NPI 1811491426ActiveIndividual· Internal Medicine, Medical Oncology· Duarte, CA
Internal Medicine, Medical Oncology (MD) with City of Hope Medical Foundation, practicing in Duarte, California. Their prescriptions cost Medicare Part D more than their services did: $217,858 for 45 claims, against $4,586 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 3 companies reporting payments in 2025, $1,532 in all, mostly travel and lodging.
Overview
| NPI | 1811491426 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 19, 2018 |
| Last updated in NPPES | Aug 9, 2024 |
| Certified by provider | Aug 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A194498 | CA |
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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 19 |
|---|---|
| Services billed | 45 across 6 procedure codes |
| Paid by Medicare | $4,586 |
Part D prescriptions in 2024
| Prescriptions (claims) | 45 · 53 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $217,858 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2025$1,532 · 5 payments from 3 companies
- 2024$25.95 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $1,369 | 3 |
| Biontech Se | $110.36 | 1 |
| Astrazeneca Pharmaceuticals LP | $53.01 | 1 |
What the 2025 payments were for
- Travel and Lodging$1,201 · 2 payments
- Food and Beverage$331.90 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Medical Oncology providers in Duarte
- 1568921716
- 1033506134
- 1346289824
- 1427570332
- 1285831057
- 1891157889
- 1679599914
- 1588771364
- 1861465759
- 1558500397
- 1598297459
- 1508879115
All Internal Medicine, Medical Oncology providers in California →