Vivian Chang, MD
Pediatric Hematology-Oncology · Los Angeles, CANPI 1255595229
Payments from drug & device makers
What this record shows
That places this record below the midpoint for pediatric hematology-oncology clinicians in CA, where the typical reported total is $536.
No general payments reported
No drug or device maker reported general payments to this provider for 2019–2025. That is a common and unremarkable result.
Across 7 payments — averaging $200,245 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Novartis$1.4M
How this compares
$0 in reported general payments places this provider in the 5th percentile of 307 pediatric hematology-oncology providers in California.
See all pediatric hematology-oncology providers in California →
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other pediatric hematology-oncology in Los Angeles
- Noah FedermanLos Angeles$399K
- Jan van TornoutLos Angeles$137K
- Thomas CoatesLos Angeles$99K
- Andrew DietzLos Angeles$88K
- Geetha PuthenveetilLos Angeles$62K
- Hisham Abdel AzimLos Angeles$52K
- Michael PulsipherLos Angeles$45K
- Leo MascarenhasLos Angeles$35K
- Edward GompertsLos Angeles$28K
- Paibel Aguayo-HiraldoLos Angeles$21K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.