Rita E. Skalak Rita E. Skalak is a food challenge/OIT coordinator in the Division of Allergy at Children's Hospital of Philadelphia. Appointments and Referrals: 1-800-TRY-CHOP (1-800-879-2467) Education and Training Board CertificationCardiopulmonary Resuscitation (CPR)Undergraduate DegreeAS in Medical Assisting - Lansdale School of Business, North Wales, PA Titles and Academic Titles Food Challenge/OIT Coordinator Departments and Services Division of Allergy