An allergist / immunologist (commonly referred to as an allergist) is a physician specially trained to diagnose, treat and manage allergies, asthma and immunologic disorders including primary immunodeficiency disorders. These conditions range from the very common to the very rare, spanning all ages and encompassing various organ systems.

Specialist Immunology and Allergy physicians undergo similar training as other medical specialists. They receive general training in medicine, followed by postgraduate training in immunology and allergy.