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What is a Radiologist?

A radiologist is a physician who specializes in using imaging technologies – such as ultrasound, CT scans, MRI, nuclear medicine or digital X-Ray - to diagnose and/or treat diseases and disorders. 

Radiologists have successfully completed at least 13 years of post-high school education, including four years of undergraduate study, four years of medical school (and physician licensure), and five years of post-graduate training – which includes a four year residency program. 

Following this, some radiologists enter into sub-specialty training programs, called fellowships, which are usually one or two years long. Fellowship training programs are in areas such as abdominal imaging, thoracic imaging, CT/Ultrasound, MRI, musculoskeletal imaging, interventional radiology, neuroradiology, interventional neuroradiology, pediatric radiology, mammography and women's imaging. 

Radiology divides into sub-specialties so that radiologists may gain greater expertise in treating particular conditions, parts of the body or types of patients. Many of the radiologists at Florida Hospital Memorial Medical Center are sub-specialists.

Radiologists are certified by the American Board of Radiologists (ABR) in areas such as radiation oncology and diagnostic radiology, which includes subspecialties like neuroradiology, nuclear radiology, pediatric radiology, and vascular and interventional radiology. 

Our Radiologists

Robert Hewes, M.D.

Robert Hewes, M.D.

Medical Director, Cardiovascular and Interventional Radiology, Musculoskeletal Radiology

Dr. Hewes' friendly, warm personality and humble demeanor belies the fact that he has always been on the cutting edge of radiology, often lecturing nationally and internationally. One of the first fellowship-trained Interventional radiologists in America, he has developed new techniques in MRI of the knee, as well as in percutaneous bone biopsy.

Nicholas Hatton, M.D.

Nicholas Hatton, M.D.

Nuclear Medicine and Magnetic Resonance Imaging

Nicholas Hatton, MD, is board certified in diagnostic radiology by the American Board of Radiology with a Certificate of Added Qualification (CAQ) in Nuclear Medicine. He is fellowship trained in imaging research, nuclear medicine and magnetic resonance imaging.

Roberto Medina, M.D.

Roberto Medina, M.D.

Body Imaging

Roberto Medina, MD is fellowship trained in Body Imaging including all aspects of MRI, CT scan and ultrasound. Before joining Florida Hospital Memorial Medical Center Imaging, Dr. Medina held a teaching position at the George Washington University School of Medicine and Health Sciences and also served as a Radiology Attending at the George Washington University Hospital in Washington, D.C.

Dindi Reddy, M.D.

Dindi Reddy, M.D.

Vascular and Interventional Radiology

Dindi Reddy, MD is a board-certified radiologist, with special certification in vascular and interventional radiology. Dr. Reddy is fellowship trained in pediatric cardiac surgery, as well as vascular and interventional radiology.

Brandon Runyan, M.D.

Brandon Runyan, M.D.

Assistant Medical Director, Breast Imaging, Oncological Imaging, Musculoskeletal Imaging and Magnetic Resonance Imaging

Brandon Runyan, MD is the on-site medical director of the outpatient imaging center at Florida Hospital Memorial Medical Center. Highly skilled and with the patient’s care a priority, Dr. Runyan’s approach is individualized and compassionate. He is board certified in diagnostic radiology and holds a fellowship in musculoskeletal radiology with expertise in bone and joint care, back pain and sports radiology. His range of practice is broad and includes utilizing advanced technologies in oncologic imaging and breast imaging. Dr. Runyan also performs on-site pain injections and biopsies.

James Welden, M.D.

James Welden, M.D.

Board-Certified Radiologist

James Maxwell Welden, MD is a board-certified radiologist through the American Board of Radiology. Dr. Welden graduated with bachelor’s degrees in biology and biomedical science, as well as his medical degree, from Auburn University. He performed his internship and residency in diagnostic radiology at Baptist Health Systems in Birmingham, Ala., and completed a fellowship in abdominal imaging at Emory University in Atlanta, Ga.