John McMahan

Dr. John McMahan is the nasal and sinus expert at Northwestern Nasal + Sinus in Chicago, IL. If you are a Chicago or Northern Illinois resident who suffers from sinus problems, chronic snoring, allergies or a breathing disorder, turn to Northwestern Nasal + Sinus for innovative, personalized solutions.

Dr. McMahan is a board-certified Otolaryngologist and Fellow of the American College of Surgeons who has practiced medicine for more than 20 years. He is also an Assistant Professor in the Department of Otolaryngology–Head and Neck Surgery at Northwestern University Medical School. He has served as a Course Director of Advanced Landmark Based Sinonasal Surgery, and on the faculty of international symposiums on sinus surgery and allergies. Since 1997, Dr. McMahan has served on the Board of Directors of the American In-Vitro Allergy and Immunology Society.

His research has focused on the treatment of allergic diseases of the nose and sinuses, including the identification and treatment of bacterial and fungal sinusitis.