Do our M.D.'s go through radiation??

As I continue to study this horrible disease and the barbaric, perhaps worse than the disease treatments, I keep hearing distant voices from individuals and the internet, saying that our cancer M.D.'s typically shun radiation and chemo when THEY get this disease. Has anyone out there heard stats on this subject, and, if so, could you direct me to a place where I can read them? This might help me make a more informed decision if the cancer returns. Thanks.