Niswonger Children’s Hospital presents the Brian Culbertson “Funk” tour – coming in concert to the Niswonger Performing Arts Center in Greeneville, Tennessee, Sunday June 25th. Order your tickets today at npacGreeneville.com and help support the Niswonger Children’s Hospital! The only regional children’s hospital, serving 29 counties! The Brian Culbertson “Funk” tour – coming to Niswonger Performing Arts Center, Sunday June 25th at 6:30pm. Supporting the Niswonger Children’s Hospital.