CNI Interventional Neuroradiology Service
Meet Our Team
Physicians and Staff
Richard J. Bellon, MD, Medical Director
Richard J. Bellon, MD, specializes in interventional neuroradiology and is Medical Director of the CNI Interventional Neuroradiology Service. He attended medical school at Case Western Reserve University School of Medicine in Cleveland, Ohio, and completed his residency in diagnostic radiology at the University of Arizona. Dr. Bellon also completed a fellowship in diagnostic neuroradiology at Stanford University and in interventional neuroradiology at Massachusetts General Hospital in Boston. Dr. Bellon is board-certified with additional qualifications in neuroradiology by the American Board of Radiology.
Donald F. Frei, Jr., MD
Donald F. Frei, Jr., MD, is an interventional neuroradiologist. Dr. Frei attended medical school at the University of Cincinnati. He completed his Diagnostic Radiology Residency at Tulane University Medical Center. He then completed both diagnostic neuroradiology and interventional neuroradiology fellowships at the Mallinckrodt Institute of Radiology in St. Louis, Missouri. Currently, as a member of Radiology Imaging Associates (RIA), P.S., Dr. Frei performs minimally invasive interventional neuroradiology procedures, including acute catheter directed stroke intervention, angioplasty/stent revascularization of cerebrovascular stenosis and minimally invasive treatment of cerebral aneurysms and arteriovenous malformations. Dr. Frei is working towards establishing state-of-the-art diagnostic and management strategies in treating patients with acute stroke. Dr. Frei is a senior member of the American Society of Interventional and Therapeutic Neuroradiology and the American Society of Neuroradiology.
Daniel C. Huddle, D.O.
An interventional neuroradiologist, Daniel C. Huddle, DO, completed medical school and radiology residency at Michigan State University. Subsequent training included a fellowship in diagnostic neuroradiology at University of Chicago School of Medicine and a fellowship in interventional Neuroradiology at Yale University and Harvard School of Medicine/Massachusetts General Hospital. Following his faculty position at the University of Colorado Health Sciences Center, he joined Radiology Imaging Associates (RIA), P.S. His focus is minimally invasive treatment of aneurysms, AVMs, dural fistula and acute stroke. Dr. Huddle is a senior member of the American Society of Interventional and Therapeutic Neuroradiology and American Society of Neuroradiology.
David N. Loy, MD, PhD
David N. Loy, MD, PhD, is a fellowship-trained interventional neuroradiologist. He joined Colorado Neurological Institute in 2011 and is on the staff of Radiology Imaging Associates. Dr. Loy earned his medical degree and PhD in anatomy and neurobiology at the University of Louisville School of Medicine. After his internship in general surgery at University of Louisville Hospitals, Dr. Loy completed his residency in diagnostic radiology at Mallinckrodt Institute of Radiology at Barnes-Jewish Hospital in St. Louis, Missouri. Dr. Loy completed two fellowships--one in endovascular surgical neuroradiology, and the other in diagnostic neuroradiology, both at the Mallinckrodt Institute of Radiology at Washington University. At CNI, Dr. Loy works primarily with the Stroke Program. He also has expertise with spinal cord injury patients.
Wayne F. Yakes, MD
An interventional neuroradiologist, Wayne F. Yakes, MD, attended Rice University for undergraduate studies and graduated from medical school at Creighton University. He served 12 years in the US Army, including service in Desert Storm. Dr. Yakes was board certified in 1983. He has subspecialty training in interventional radiology and interventional neuroradiology. He established the Vascular Malformation Center at Swedish Medical Center in 1991 to specialize in the diagnosis and management of vascular anomalies in all anatomic locations. It is the only center in the world that is totally dedicated to the management of vascular malformations and is referred patients from virtually every country in the world.