Dr. Chang is a radiation oncology specialist with expertise in treating patients with breast cancer and pediatric cancer patients with proton beam therapy. He is also extensively involved in research and is the Principal Investigator in an ongoing multi-institutional trial utilizing proton therapy for partial breast irradiation. Before coming onboard at California Protons, he served as the director of the pediatric programs at the Hampton University Proton Therapy Institute, the Midwest Proton Radiotherapy Institute, as well as the ProCure proton therapy center. He completed a pediatric internship and residency in radiation oncology at Loma Linda University Medical Center and subsequently did a fellowship in pediatric oncology at St. Jude Children’s Hospital.
PCG Staff &
Board of Directors
PCG Staff

Clinical Research Associate:
Edith Maritato
Edith received her Bachelor’s degree from Northern Illinois University. She has 5 years of oncology research experience in numerous phase II and Phase III clinical trials for solid and hematological diseases. She also has experience coordinating specialized external and systemic radiation studies for Neurological, Head & Neck and Blood cancers. Most recently she worked as a clinical research coordinator for Northwestern Medicine Cancer Centers in Chicago’s West Region.

Data Specialist:
Mary Beth Henry
Mary Beth received her BS in Marketing from Northern Illinois University. Mary Beth has over 40 years of experience in Marketing and IT, and most recently she worked for Northwestern Medicine’s psychosocial oncology program for 11 years.
Board of Directors

Secretary:
Robert Miller, MD
Mayo Clinic
The primary research activities of Robert C. Miller, M.D., are focused on testing existing medications to determine if they can be used to reduce the negative symptoms associated with radiotherapy. This is being done through a series of national, multi-institutional phase III randomized controlled trials performed through the Alliance for Clinical Trials in Oncology. Additionally, Dr. Miller is leading the design of clinical trials for the Mayo Clinic Proton Beam Therapy Program.