Ian R. Crocker, MD, FACR


Titles and Roles

Professor Emeritus, Department of Radiation Oncology
Emory University School of Medicine
Research Program
Discovery and Developmental Therapeutics


Board certified in internal medicine and radiation oncology, Ian R. Crocker, MD, FACR, specialized in the treatment of benign and malignant brain and eye tumors. He was involved in implementing and refining many treatment programs used in the management of brain and eye tumors. 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 retired his practice in October of 2016.

Dr. Crocker is a fellow of the prestigious American College of Radiology. He 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 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 initiated three separate radiosurgery programs, each the first of their kind in the state of Georgia. Each of these programs 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 N.A.B.T.T. (New Agents for Brain Tumor Treatment) and as co-investigator of brain tumor studies of the Brain Tumor Study Group.

  • Below is a listing of current federal grants for the above principal investigator.



Dr. Crocker has 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.

  • PublicationsPublication Date


Dr. Crocker has been recognized as one of the best doctors in Atlanta, including being named as one of Atlanta Magazine's "Top Doctors" in 2015 and 2016, as well as one of the best doctors in America in his specialty field.

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