Physician profile

John Siebel

Medical Oncology · San Mateo, CA

NPI 1780741306

$221.97

in general payments reported to CMS, 2019-2025

4 companies · none reported in 2025

Payments by year

General payments by program year, as reported to CMS.

Who reported paying

General payments only, as reported to CMS. Product names cover 2023-2025.

CompanyGeneral paymentsYearsTop products
E.R. Squibb & Sons, L.L.C. $118.01 2022
Astrazeneca Pharmaceuticals LP $45.42 2019-2022
Seagen INC. $43.78 2022
Novo Nordisk INC $14.76 2019

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Payment summary

John Siebel

$221.97

in general payments reported 2019-2025

Years
2019-2022
Top company
E.R. Squibb & Sons, L.L.C.

https://glasscript.com/doctor/35699/john-siebel

Source: CMS Open Payments, program years 2019-2025. Payments are legal and often routine.

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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.