He has 14 years of experience as a general radiologist. After completing his residency in radiology, he served as an associate professor and consultant radiologist at Christian Medical College Vellore, India. Specializing in abdominal radiology and body interventional radiology, Dr. Mammen’s expertise covers a spectrum of areas, including general radiology, abdominal imaging, and body angiography. His professional journey includes notable roles such as associate professor at Christian Medical College Hospital, India, where he also contributed as a faculty member for the interventional and radiology fellowship program. He has earned a fellowship in angio-intervention imaging and a fellowship in abdominal imaging, from The Ottawa Hospital, University of Ottawa, Canada. Dr. Mammen is an esteemed member of various professional associations, like the Indian Radiological and Imaging Association, Indian Society of Vascular and Interventional Radiology, Indian Medical Association, and Indian Society of Neuroradiology.