Meet the

Rush RadioSurgery Team

The experts at Rush RadioSurgery are here to help you. Learn more about each team member below.


Dian Wang, MD

Professor of Radiation Oncology and Urology


Director of Clinical Research and Brachytherapy Services

Gaurav Marwaha, MD

Assistant Professor of Radiation Oncology


Radiation Oncologist

Ken Tatebe, MD, PhD

Assistant Professor of Radiation Oncology


Rush Unversity Medical Center

Radiation Therapists

Cherise Santa-Maria, RTT



Rachel Rendall, RTT




Shreena Patel, RTT

Nursing Team

Colleen Masters, NP

Neuroscience Clinical Expertise

Sarah Anderson, NP

Lung Care Nurse Lead

Sara Ruesewald, RN

Breast Care Nurse Lead

Allison Szudrowicz, RN


Amanda Young, RN


Ashley Marenyi, RN


Katie Doerr, RN


Physicist Team

Julius Turian, PhD

Chief Medical Physicist

Alistair Templeton, PhD

Medical Physicist

Yixiang Liao, PhD

Medical Physicist

Jonathon Van Schelt, PhD

Medical Physicist

Zachary Grelewicz, PhD

Medical Physicist

Administrative Team

Colleen Hafencher

Site Administrator

Cristina Ayala

Administrative Assistant





Speak To A Team Member Today!

Being diagnosed with cancer or having a loved one face the disease can be scary. Rush Radiosurgery is here to help. Submit the form below or call our office to have our nurse navigator contact you within 24 hours (Monday-Friday).