Keith L. Miller, MD

Radiation Oncology


Dr. Miller has been very active in the Lee County medical community for over 27 years. He has served as Chief of Staff, Chairman of the Board and Lead of the Cancer Committee at local hospitals. Today, he is the Medical Director of the Lee Health Lung Cancer Screening program. He has published articles on lung cancer and radiation therapy and contributed to ASTRO guidelines for treatment of lung cancer. Dr. Miller attended the University of Florida for Medical School. He completed training in Internal Medicine, Pulmonary disease and Critical Care at the University of California, San Diego Medical Center. He trained in Radiation Oncology at Duke University. Dr. Miller raised his family in Fort Myers and enjoys an active lifestyle. He has a passion for jogging and competing in triathlons as well as golf when time allows. He is a compassionate provider who goes above and beyond for his patients and their families.


21st Century Oncology
3680 Broadway Boulevard
Fort Myers, 33901 Florida
239-936-6684 Fax

21st Century Oncology
8931 Colonial Center Drive
Suite 100
Fort Myers, 33905 Florida
239-936-1689 Fax

21st Century Oncology
1419 SE 8th Terrace
Cape Coral, 33990 Florida
239-772-8346 Fax

21st Century Oncology
1120 Lee Boulevard
Lehigh Acres, 33936 Florida
239-369-6235 Fax

21st Century Oncology
7341 Gladiolus Drive
Fort Myers, 33908 Florida
239-489-3219 Fax


University of Florida
Gainesville, FL
University of Florida College of Medicine
Gainesville, FL
University of California San Diego Medical Center
Internal Medicine
San Diego
University of California San Diego Medical Center
Internal Medicine
San Diego, CA
Duke University
Radiation Oncology
Durham, NC
University of California San Diego
Pulmonary Disease and Critical Care
San Diego, CA

Clinical Expertise and Interests

Board Certifications
Board Certified - Radiation Oncology, Internal Medicine, Pulmonary Medicine
Clinical Interests
Prostate, Breast, Lung, Gastrointestinal, Colorectal, Head & Neck Malignancies

Awards and Honors

Chairman of the Lee Memorial Cancer Committee, Former Chief of Staff and Chairman of the Board of Trustees for SW Regional Medical Center. Contributor to ASTRO Guidelines for the Treatment of Lung Cancer, Published Numerous Articles on Treating Lung Cance

Current and Past Positions

Current Position

21st Century Oncology - Radiation Oncologist
Fort Myers, FL
Past Positions
Associates in Pulmonary Medicine - Private Practice, Pulmonary & Critical Care Medicine
Fort Myers, FL
Southwest Florida Regional Medical Center - Chairman, Board of Trustees and Chief of Staff
Fort Myers, FL