Celiac Disease and Non-Celiac Gluten Sensitivity for Nurses and Health Care Providers. A comprehensive course approved by the ONA for 8 CEUs and accredited by the ANA taught by Nadine Grzeskowiak, RN, BSN, CEN, Celiac Nurse Specialist. It takes 9-15 years, if ever to get a correct diagnosis of celiac disease in the United States. 30% of newly daignosed celiac patients are over 60 years of age and most suffer for decades before they are diagnosed. Learn how to recognize, test and provide follow-up. Focus on Signs and Symptoms, Intestinal Health, Microbiome, Immune System and so much more!