Former Cyclist Grischa Niermann Suspended for Doping

Recently former German cyclist Grischa Niermann came forward to admit his use of EPO from 2000-2003. Niermann came forward to admit his doping past to help fight for a clean sport and educate younger riders of his negative experiences. Although a coach now Niermann still received a reduced six month suspension that started on February 15th. Are any top level cyclists clean these days?