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About Us

Meet Our Team

Every patient is under the care of a radiation oncologist who is a cancer specialist with expertise in the application of radiation therapy as it is used in the management of cancer. In a large program such as ours, the radiation oncologists have particular expertise with specific types of cancer. This ensures that your physician is one who focuses on your specific type of cancer.

In the Department of Radiation Oncology, our goal is to develop and implement treatment programs geared towards maximizing the chances of cure while minimizing the radiation dose to normal organs, thus attempting to maintain your quality of life and preserve your normal organ function. Our radiation oncologists maintain strong academic, clinical and research interests, and a commitment to your well being. In addition, many on our staff are faculty members of the James H. Quillen College of Medicine, our local medical school.

Medical Director for Oncology Services
Dr. Colvett

Kyle Colvett, M.D.

  • Medical Director for Oncology Services,  Mountain States Health Alliance
  • Clinical Professor of Surgery, Clinical Associate Professor of Internal Medicine, James H. Quillen College of Medicine , East Tennessee State University
  • Attending Physician, Department of Radiation Oncology, Indian Path Medical Center
  • Attending Physician, James H. Quillen Veterans Affairs Medical Center

Dr. Kyle Colvett has been the medical director of the radiation oncology program since 1996. He is a native of Alamo, Tennessee, where he grew up the youngest of six children on a small cotton farm.

He pursued undergraduate education at Texas Tech University and received his bachelor's degree from Harding University. A 1992 graduate of East Tennessee State University's James H. Quillen College of Medicine, Dr. Colvett continues to serve as the president of its alumni society.

Dr. Colvett received his residency training at Harvard University and Massachusetts General Hospital. While at Harvard, he was honored by the medical students with two teaching awards. He also holds a Master's degree in physics and has pursued graduate education in religion.

He presently serves as Clinical Professor in the Departments of Surgery and Internal Medicine at ETSU and has served as Chief of Staff for Johnson City Medical Center and the other Washington County Hospitals for MSHA.  He serves MSHA as the Medical Director for Oncology Services.

Dr. Colvett especially enjoys the challenges of pediatric care through MSHA and ETSU's affiliation with the St. Judes Children's Research Hospital.

Dr. Colvett is a fourteen year veteran of the U.S. Army Reserve and the Tennessee Army National Guard.  He continues to serve the country as an expert in radiation emergencies and terrorism.

He is the author of numerous scientific articles and book chapters.

He has been active in medical mission work, primarily in northern Haiti.

Dr. Colvett and his wife Mary are the parents of six children and they make their home in Piney Flats.

Radiation Oncologist Staff Physician

Dr. Floyd

Nathan Floyd, M.D.

Dr. Floyd joined the Radiation Oncology staff in 2011. He is affiliated with multiple hospitals in the area, including Johnson City Medical Center (JCMC), Indian Path Medical Center (IPMC), and James H. Quillen Veterans Affairs Medical Center. He received his medical degree from East Tennessee State University, James H. Quillen College of Medicine and has been in practice for 16 years. He is one of 2 doctors at JCMC and IMPC and one of 3 at James H. Quillen Veterans Affairs Medical Center who specialize in Radiation Oncology. He is board certified by the American Board of Radiology.

Dr. Floyd's mission is to provide the highest quality one-on-one care to every patient that walks through our doors.

He resides in Johnson City with his wife, Dr. Katrena Floyd.

Appalachian Radiation Oncology (Regional Cancer Center at Johnson City Medical Center)
400 N. State of Franklin Road, Johnson City, TN 37604
Phone: 423-431-6000
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