John Lister in

John Lister

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Chief Administrative Officer at Billion To One
📍 Carlsbad, California, United States

John Lister is the Chief Administrative Officer at BillionToOne, a molecular diagnostics company. He is a seasoned med-tech leader with a broad background spanning legal, HR, commercial, and international operations. His experience includes scaling companies like Dexcom from 70 to over 6, 000 employees and holds a Juris Doctor from the University of San Francisco.

He successfully transitioned from leading legal and HR departments at Dexcom to building and running the companys entire international business for five years.

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Experience
17 Years
Current Role
Chief Administrative Officer
Job Level
Leadership
Location
Carlsbad, California, United States
Personality Overview

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Communication Style
Decision Approach
Work Preference

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Priorities

Topics John cares about

Scaling MedTech Companies
He has extensive experience on executive teams that have led high-growth companies, such as Dexcom, from zero revenue to over $1. 5 billion.
Diabetes Technology
He has over 15 years of deep industry experience, having held leadership roles at diabetes-focused companies like Dexcom, Tidepool, and Quin.
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Career

Work history

7-2025
Chief Administrative Officer
Billion To One
6-2022 - 6-2025
Chief Operating Officer
Tidepool
2-2020 - 5-2023
Board Member
Quin: Diabetes Management
1-2020 - 1-2023
Strategic Advisor
Tandem Diabetes Care
1-2008 - 9-2019
EVP, Legal, Human Resources, and International
Dexcom
In the press

Media appearances

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Education
1993 - 1997
Education details unavailable
Claremont McKenna College
2000 - 2003
Doctor of Law - JD
University of San Francisco
Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

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