Leading-edge radiation therapy
With more than 30 years of service and 98 locations nationwide, 21st Century Oncology is a leader in radiation therapy using the latest technology, including:
Headquartered in Fort Myers, 21st Century Oncology operates facilities in 17 states, as well as 36 international facilities. We employ more than 350 radiation oncologists and nearly 600 specialists, including urologists, surgeons, medical oncologists, pathologists, gynecologic oncologists and primary care physicians.
Our treatment centers offer our patients a full spectrum of radiation therapy—which is used to treat the most common types of cancers, including prostate, breast, lung and colorectal. Radiation is either given externally or internally, and some cancers require both treatments.
Through continuous improvement and innovation, 21st Century Oncology is committed to providing superior quality and cost-effective services responsive to the needs of our patients.
To learn more about 21st Century Oncology, visit www.21stcenturyoncology.com.
Dr. Alan Brown earned his medical degree at the University of Michigan, and completed his postgraduate residency training in radiation oncology at Massachusetts General Hospital in Boston. He completed research in breast cancer incidence and age distribution in minorities and has done work with BOLD MR Imaging, which allows assessment of reductions in tumor oxygen supply. Dr. Brown specializes in conformal 3-D radiation therapy, intensity modulated radiation therapy (IMRT), stereotactic radiosurgery (SRS), proton irradiation, high dose rate brachytherapy and permanent brachytherapy (seed implants). He has a particular interest in central nervous system, gastrointestinal, genitourinary, lung and breast malignancies.
Dr. Constantine Mantz earned his medical degree from the University of Chicago’s Pritzker School of Medicine and completed a surgical internship at the Hennepin County Medical Center in Minneapolis. Dr. Mantz completed a radiation oncology residency at the University of Chicago Hospitals. He is board certified in radiation oncology by the American Board of Radiology and is a member of the American College of Radiation Oncology, the American Medical Association, the American Society for Therapeutic Radiology and Oncology (ASTRO) and the Association of Freestanding Radiation Oncology Centers. Dr. Mantz has a special interest in the study and treatment of prostate cancer.
Dr. Keith Miller earned his medical degree from the University of California, San Diego. Prior to completing a residency in radiation oncology at Duke University in Durham, N.C., Dr. Miller was trained in internal medicine and pulmonary and critical care. He is board certified in internal medicine, pulmonary and critical care, and radiation oncology. Dr. Miller is a Fellow of the American College of Chest Pain Physicians, a member of the American Society for Therapeutic Radiology and Oncology, the American Society of Clinical Oncology, the American Medical Association and the American College of Radiation Oncology.
Dr. Mirabeau-Beale is passionate about evidence-based medicine and maintaining patient quality of life during treatment. She earned her bachelor’s degree and medical doctorate from Harvard University, both with honors. She completed her residency training in radiation oncology at the Harvard Radiation Oncology Program, a joint program between Brigham and Women’s Hospital/Dana Farber Cancer Institute and Massachusetts General Hospital and earned a Masters of Public health degree during her training. While at Harvard Medical School, she was awarded the Linnane Scholar Award for academic excellence and community leadership. She has published extensively on quality of life in female cancer survivors, and has clinical expertise treating breast and gynecologic cancers as well as lung and gastrointestinal malignancies.