Dr. Johana Castro Wagner is an experienced Allergy, Asthma, & Immunology specialist double board-certified in Allergy/Immunology & Pediatrics. Dr. Castro Wagner specializes in Food Allergy (often an underlying cause of stomachaches, anxiety, & more), Asthma, Eczema, and Pediatric Allergic & Immune conditions. She leads the Oral Immunotherapy Clinic for Peanut Allergy at Sher Allergy Specialists, known for its personalized & cutting-edge treatment. Dr. Castro Wagner is fluent in Spanish & English. She is accepting new patients at SAS, located in Largo, Fl. Telehealth, Same-Day, & In-Office appointments available. SAS serves patients from Largo, Seminole, St. Petersburg, Clearwater, Belleair, Pinellas Park & more.