Executive Leadership


Dow Wilson
Dow R. Wilson

Chief Executive Officer (CEO)


Chris Toth
Chris Toth

President and Chief Operating Officer


Dee Khuntia
Deepak “Dee” Khuntia, M.D.

Senior Vice President and Chief Medical Officer


Michael Hutchinson
Michael Hutchinson

Senior Vice President, Chief Legal Officer


Raphael Torres
Rafael A. Torres

Senior Vice President, Strategy & Business Development


Vy Tran
Vy H. Tran, J.D.

Chief Compliance Officer


Tom Rodden
Thomas Rodden

Senior Vice President, Chief Information Officer


Kathy Conner
Kathy Conner

Vice President, Global Corporate Marketing

Kolleen Kennedy
Kolleen T. Kennedy

President, Proton Solutions and Chief Growth Officer


Corey Zankowski
Corey Zankowski, PhD

Senior Vice President, Oncology Software Solutions


Terilyn Monroe
Terilyn Juarez Monroe

Chief People Officer, Senior Vice President, People & Places


Andy Whitman
Andrew Whitman

Senior Vice President, Government Affairs


Kevin O’Reilly
Kevin O’Reilly

Senior Vice President and President, Varian Oncology Systems


Magnus Momsen
Magnus Momsen

Senior Vice President Chief Accounting Officer and Corporate Controller
Interim CFO


Francis R. Facchini, M.D., FSIR
Francis R. Facchini, M.D., FSIR

President, Interventional Solutions