Physician profile

Douglas N Zlock

Internal Medicine · Walnut Creek, CA

NPI 1427082692

$736.55

in general payments reported to CMS, 2019-2025

10 companies · none reported in 2025

See the full distribution for Internal Medicine

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
Amgen INC. $188.35 2019-2020
Novo Nordisk INC $136.19 2020-2021
Abbott Laboratories $119.33 2019-2020
Tandem Diabetes Care, INC. $87.32 2019
Mannkind Corporation $80.01 2019
Medtronic, INC. $46.80 2021
Lilly USA, LLC $23.93 2020
Astrazeneca Pharmaceuticals LP $23.61 2020
Companion Medical, INC. $16.91 2019
Insulet Corporation $14.10 2020

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Payment summary

Douglas N Zlock

$736.55

in general payments reported 2019-2025

Years
2019-2021
Top company
Amgen INC.

https://glasscript.com/doctor/64751/douglas-n-zlock

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.