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Our vision

At Gray, we are driven by a vision of a healthcare system where no resources are wasted. Our team of experts is united around its mission: to put technology at the service of a sustainable and equitable health system, by becoming the operating system for healthcare. We are on a journey to delivering strategic and operational excellence in cancer care for each patient, one centre at a time.

Meet The Team

Gray Oncology Solutions was founded in 2019 by two PhDs in medical Physics, André and Marc-André, and their professors, Louis-Martin, Nadia and Jan. Their goal was to solve the “last mile problem” of bringing decades of research to clinical reality.

They have now been joined by a talented team of professionals with a unique blend of technical, clinical and academic expertise.


André Diamant

Co-founder & CEO

PhD Medical Physics, specialized in deep learning for outcome prediction in oncology.

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Nadia Lahrichi

Founding advisor

Polytechnique Montréal - healthcare logistics.


Nick Tacik

Principal Data Scientist



Elizabeth Ourumis

Implementation manager


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Marc-André Renaud

Co-founder & CTO

PhD Medical Physics, specialized in optimization and radiation therapy treatment planning.


Jan Seuntjens

Founding advisor

Head of Medical Physics - Princess Margaret Cancer Centre.


Gat Manuel

Lead Developer



Murray Christopherson



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Louis-Martin Rousseau

Founding advisor

Canada research chair in healthcare logistics (HANALOG).


Raphaèle Piot-Rolland

VP Operations

Pharmacist, specialized in data-based business strategies.


Alexandre Berryman

Data Scientist


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