Dr. Tumlin is a practicing Nephrologist. He is Professor of Medicine at the University of Tennessee in Chattanooga. He is also the founder and Medical Director of the Southeast Renal Research Institute. He is widely acknowledged as a thought leader in acute kidney injury. He has conducted over 20 years of clinical research and has published numerous studies on contrast induced nephropathy. He is on the editorial board of the Journal of the American Society of Nephrology and reviews manuscripts for multiple medical journals.