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Peter Maxim

Peter Maxim

Professor in residence in radiation oncology at the University of California, Irvine, and co-founder of TibaRay, Inc.

Director
Updated Nov 6, 2026·Latest SEC filing Nov 3, 2026·Suggest an edit

About Peter Maxim

Peter Maxim holds the title of professor in residence in radiation oncology at the University of California, Irvine, where he also serves as vice chair of medical physics. He is also co-founder and a board member of TibaRay, Inc. The company is designing and building a next-generation medical linear accelerator that delivers radiation in sub-second timescales. This is meant to freeze tumor and organ motion while increasing the therapeutic index of radiotherapy.

He was formerly on the faculty of radiation oncology at Stanford University, where he co-invented the PHASER technology.

Experience

This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Peter Maxim in the role, so the role may have started earlier or lasted longer.

Tibaray, Inc. Current
Co-Founder & Member, Board of Directors
2025 – Present · Fremont, CA
TibaRay's Galactica linear accelerator is designed to deliver a full radiotherapy dose in a fraction of a second while sparing healthy tissue.
University of California, Irvine Current
Professor In Residence, Radiation Oncology

Key Colleagues at Startups

The people Peter Maxim works with at each company, as listed on that company's latest Form D.

Tibaray, Inc. · Form D, Nov 3, 2026
Thinh Tran
Thinh Tran
CEO, Member, Board of Directors
Laird Cagan
Laird Cagan
Member, Board of Directors
James Vetter
James Vetter
Member, Board of Directors
Billy Loo
Billy Loo
Director
Sami Tantawi
Sami Tantawi
Co-Founder, CTO & Member, Board of Directors

Sources

  1. SECTibaray, Inc. Form D, filed Nov 3, 2026