Allergy / Immunology

As an allergist / immunologist in Brooklyn, Dr. John Castronovo offers specialized care for allergic reactions and immunological disorders in patients of all ages. Dr. Castronovo may treat and manage conditions like asthma, hives, and a range of allergic reactions like environmental or food allergies. He may also treat rhinitis & sinusitis, as well as other disorders that affect the body's immune system.