11/18/2025
Welcome, Dr. Robert Isaak, board-certified radiation oncologist, who recently joined the Idaho Cancer Center at EIRMC.
Dr. Isaak is a native of Rupert, Idaho. Before returning to his home state, he spent 17 years practicing in Des Moines, Iowa, where he was known for his compassionate, patient-focused approach to cancer care.
Dr. Isaak earned his pharmacy degree from Idaho State University and medical degree from the University of Nevada, Reno. He completed his specialty training in radiation oncology through Wayne State University at the Detroit Medical Center.
Dr. Isaak served a church mission in Hong Kong early in his life—an experience that deepened his compassion for others and sparked his appreciation for new challenges and adventures.
He and his wife, who is from Marsh Valley, Idaho, have five children and two grandchildren. Outside of medicine, Dr. Isaak enjoys cycling, golf, aviation, and travel. He embraces opportunities for adventure, both personally and professionally, and is dedicated to helping patients and families navigate their cancer journey with care, respect, and hope.