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The Immune Deficiency Foundation (IDF) understands the challenges in finding a specialist who treats people with primary immunodeficiency diseases (PI). IDF maintains an online database—IDF Physician Finder—to help patients and families locate a specialist.

You can search physicians by geographic location, last name, specialty and more. Visit and login or create an account to start your search. If you are having trouble locating a physician, or have feedback to help us improve this new feature, please contact IDF at 800-296-4433 or