/Sadler, Karen Sadler, Karen ARNP Allergy Ear, Nose and Throat Skin Cancer Clinical Interests Identifying and treating skin cancers, managing patients with allergies, sleep apnea, cerumen removal from ears, and other ENT related problems Practice Cedar Valley Center for Skin, ENT, Sinus & Allergy Medical School Purdue University Global; Chicago, IL Board Certifications American Academy of Nurse Practitioners Certification Program
