About us

Built by researchers, engineers, and clinicians who believe every patient deserves access to the best oncology knowledge in the world.

Radical Health team in a working session

Why we built Radical Health

When you or someone you love is diagnosed with cancer, you become a researcher overnight. You read every study. You call every specialist. You lie awake wondering if you missed something.

We built Radical because no one should have to fight alone. We’ve given your corner a new teammate - one who has actually read every study, who has seen how eleven million patients were treated at the world’s best hospitals, and whose only job is you.

This isn’t a chatbot. It’s a real second opinion, written for you, grounded in your record. And if you want to talk to a human, a nurse answers in minutes.

Built with

MAYO CLINIC PLATFORM_ACCELERATE
University of Cambridge

Meet the Radical Health team.

Simone Korsgaard Jensen

Simone Korsgaard Jensen

Founder & Chief Executive Officer

Two-time founder who launched their first company at age 18 and later built a mathematical oncology startup. Two-time national champion tennis player and student athlete. Top graduate with a Bachelor of Science and Master of Science in Mathematics from top university in Scotland.

Bryan Wei Zhi Tan

Bryan Wei Zhi Tan

Chief Technology Officer

Former founder in synthetic healthcare data and UK Medical Research Council researcher in multiomic causal inference. Military Intelligence veteran and #1 ranked cadet. Award-winning researcher for new target discovery in Alzheimer’s therapeutics. #1 ranked undergraduate from Cambridge University (Bio & AI).

Heidi Anderson Hupe

Heidi Anderson Hupe

Commercial and Marketing

20+ years leading commercial growth across healthcare, tech, and media. Strategic board director and advisor for PE & VC-backed businesses with numerous exits. Prev. executive at Time Inc, WebMD, and Livongo (Teladoc); expert in disruptive GTM strategies.

Louis Zhao

Louis Zhao

Product and Engineering

Former founder in spatial computing infrastructure and served as President of NeuroNYC, New York’s largest neurotechnology hub for leading researchers and investors. Dual Bachelor of Science and Master of Science in Computer Science and Biomedical Engineering at Columbia University; alumni researcher in the institute’s most cited lab (Zuckerman Mind Brain Behaviour Institute).

Tom Joy

Tom Joy

Product and Engineering

Two-time founder including GirlsWhoML, a global nonprofit expanding access for women in ML. Previously built safe AI perception models for self-driving cars; holds three patents and multiple publications at NeurIPS, ICLR, CVPR, and SIAM. #1 ranked Master’s research and Doctor of Philosophy in multimodal AI from the University of Oxford (Torr Vision Lab). Ultramarathon runner and endurance athlete.

Kalind Thakkar

Kalind Thakkar

Product and Engineering

Core founding team of Gemini Tool Use at Google DeepMind and official contributor to the Gemini 1 paper; built the foundation for how frontier models interact with the real world. Architect of key Gemini features including YouTube and Google Photos integrations. Created evals for quantitative problem solving and rebuilt SFT & RLHF pipelines to accelerate model deployment.

Our clinical advisors

Radical oncologists who define the field.

Radical Health wasn’t built in isolation. From the beginning, we developed the platform alongside practicing oncologists who write the guidelines, run the trials, and set the standard of care.

  • Yan Li, MD

    Yan Li, MD

    National Chair GI Oncology
    @ Kaiser Permanente

  • Amol Narang, MD

    Amol Narang, MD

    Medical Director @ Johns Hopkins
    NCCN Committee

  • Michael Gensheimer

    Michael Gensheimer

    Clinical Associate Professor,
    Radiation Oncology at Stanford

  • Joel Hecht, MD

    Joel Hecht, MD

    Director GI Oncology @ UCLA
    NCCN Committee

Radical Healthin the news.

Investors

When the problem is cancer, you want the best people in the room. So we brought them together.

See what their expertise makes possible