The 21st Century Oncology cancer clinic in Key West, Florida provides cancer patients with radiation therapy treatment for a variety of cancers. Every cancer journey is personal, but at 21st Century Oncology it's not one taken alone. From the initial appointment through recovery, patients work with an experienced care team dedicated to patient well-being, and one that keeps all of those involved with your care updated on all decisions, including your primary care physician or other referring specialist. Our Key West patients also benefit from the collective knowledge of our network of 750 physicians and the research that they conduct in the realm of radiation oncology. A leading provider of radiation oncology services, 21st Century Oncology is a physician-led company headquartered in Fort Myers, Florida. We operate treatment centers in many U.S. states. Our Key West clinic is one of two serving the Florida Keys. The other is in Marathon, Florida .