Welcome to Dr. Matthew Nielsen December 31, 2008 By On December 31, 2008, Matt Nielsen, MD, joined the Urology faculty. He comes to UNC from Johns Hopkins and specializes in urologic oncology and robotic surgery.. Filed Under: Categories: News Tags: 2008 More from Department of Surgery A gift of life. A testament to surgical excellence. Johnston County burn survivor shares story to help other children, finds healing at Camp Celebrate Der, Yeh provide scientific context for recent progress in RAS therapeutics for pancreatic cancer