Sandra joined Dr. Krenning's ENT & Allergy clinic in 2008. Sandra is a graduate of programs at the University of Missouri, Columbia, and the University of Missouri, St. Louis. With more than 12 years of experience in acute and chronic care, infants and adults, urgent and emergent care, Sandra brings vast experience in patient care to the Bond Clinic ENT and Allergy practice. Sandra is a candidate for SOHN (Society of Otolaryngology and Head and Neck Nurses) and an allied health member of the American Association of Otolaryngic Allergy.