He specializes in pulmonary and critical care with University of Kansas Physicians, Inc., and he is a member of the American College of Chest Physicians. Koerner has 17 years of experience in bedside nursing. Since 2012, he has held certification as an adult-gerontology acute care nurse practitioner. Prior to gaining certification, he began his nursing career as a licensed practical nurse in the operating room and advanced to become a registered nurse in the Burn Intensive Care Unit at KUMC. His passion for this topic came from understanding that NIPPV is a form of mechanical ventilation with significant implications for bedside nursing care.