Geisinger Antibiotic Allergy Pilot Program: Assess and Address

Inclusion Criteria: * Hospitalized male or female patients with a history of Penicillin (PCN) allergy or PCN-derivative allergy as reported by patient or documented in Epic * ≥18 years of age * Patients with a medical need for treatment with a PCN or PCN-derivative or other beta-lactam antibiotics as determined by an inpatient provider * Able and willing to provide consent in English. Exclusion Criteria: * History of documented immediate-onset severe allergic reaction or delayed onset hypersensitivity reaction to a PCN or PCN-derivative * Patients who are hemodynamically unstable (e.g., pulse oximetry O2 saturation \<90 %, respiratory rate \>=21 per minute, severe hypoxia requiring non-invasive ventilation, high-flow nasal canula, or mechanical ventilation, refractory hypotension requiring vasopressor support, heart rate \>100 beats per minute, etc.) * Patients with uncontrolled pulmonary diseases (like exacerbation of asthma, Chronic Obstructive Pulmonary Disease (COPD), and/or other forms of chronic lung diseases)