Name your Palette: Description: Nancy Mazarin is a Nutrition Consultant with a private practice in Great Neck, Long Island. She has a master’s degree from Columbia University and is a Registered Dietitian. Once credentialed, she opened her practice to the Long Island Community. She has practical every day solutions from over 30 years of working with Long Island health professionals and patients and a full spectrum of medical conditions. http://www.mazarinrd.com