Ian R. Crocker, MD, FACR

Professor Emeritus

Department of Radiation Oncology


Ian R. Crocker, MD, FACR, retired from practice in October 2016. Dr. Crocker was vice chair of the Department of Radiation Oncology at Emory University School of Medicine in Atlanta, GA. He practiced general radiation oncology and specialized in the treatment of brain and spine tumors and ocular melanoma.

Dr. Crocker was involved in implementing and refining many treatment programs used in the management of brain and eye tumors. He developed innovative therapies for the treatment of ocular melanoma, acoustic neuroma, gliomas and medulloblastoma, to name a few cancers in his specialty area. In collaboration with Emory ophthalmologists, Dr. Crocker developed innovative modern therapies for the treatment of ocular melanomas and metastatic lesions to the eye. He has extensive experience with radiation for the treatment of benign eye conditions.


Dr. Crocker graduated from the University of Saskatchewan, Canada. He completed his residency in internal medicine at University Hospital in London, Ontario, and his residency in radiation oncology in Toronto, Ontario, at The Princess Margaret Hospital. He held the position of assistant professor at Duke University before moving to Emory in 1986.


Dr. Crocker was recognized as a Top Doc by Atlanta Magazine, as well as one of the best doctors in America in his specialty field.

He is a fellow of the prestigious American College of Radiology. Dr. Crocker is also a member of the American Society of Therapeutic Radiology and Oncology, the European Society of Therapeutic Radiology and Oncology, the American Brachytherapy Society, and the International Society of Stereotactic Radiosurgery.


Dr. Crocker initiated three separate radiosurgery programs, each the first of their kind in the state of Georgia. Each of these programs has helped to manage difficult-to-treat brain and eye tumors as well as effectively eliminated the need for certain invasive procedures. Dr. Crocker was the first doctor in the United States to implement image-guided radiation therapy (IGRT) for brain tumors using the Varian On-Board Imaging System. He collaborated on developing a platform to incorporate advanced biologic and functional imaging into the treatment planning and follow-up process. He was also active in the clinical investigation of brain tumors, serving as a co-investigator at Emory of NABTT (New Agents for Brain Tumor Treatment). Prior to this, Dr. Crocker served as co-investigator of brain tumor studies of the Brain Tumor Study Group.



Dr. Crocker authored or co-authored over 60 research articles, and has over 70 published abstracts to his credit. He has been an invited speaker at over 50 national and international meetings.