Dr. Christopher Spencer is the founder and CEO of International Oncology Solutions, Inc. He is a Radiation Oncologist and currently serves as the Medical Director of the Delbert Day Cancer Institute and Radiation Oncology at Phelps Health. Dr. Spencer completed his residency in radiation oncology at Washington University School of Medicine/Barnes Jewish Hospital in Saint Louis, Missouri, where he served as both Assistant Chief Resident and Chief Resident. He earned his medical degree with a Distinction in Research from Saint Louis University School of Medicine and Undergraduate and Graduate degrees at Truman State University.