Dr. John McMahan

Dr. John McMahan MD, FACS

Head & Neck Surgeon

Qualifications of Dr. John McMahan MD, FACS

Professional Statement

Dr. McMahan completed his undergraduate studies at the University of South Carolina majoring in biology with a minor in marine biology. Dr. McMahan received his M.D. degree from the Medical University of South Carolina. Following medical school, he continued his training at Northwestern University in Chicago where he completed a surgical internship and a residency in Otolaryngology–Head &Neck Surgery. He then completed a fellowship in Head and Neck Oncology sub-specializing in sinus cancer. Dr. McMahan is a board-certified Otolaryngologist and Fellow of the American College of Surgeons who has practiced medicine for more than 20 years. Since 1992, Dr. McMahan has been in private practice at Northwestern Nasal + Sinus specializing in nasal, sinus, allergy, sleep and snoring conditions. He has an in-house CT scanner and a specialty allergy lab. He is one of a few DAN (Divers Alert Network) physicians in Chicago and sees numerous scuba divers with ear and sinus problems.

Dr. McMahan is an Assistant Clinical 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.

He is married to Lynn McMahan who has special interests in eco-green development and has been invaluable as a resource for counseling patients how to improve their environment at home and work.


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151 N. Michigan Avenue, St..., Chicago, IL, 60601
7456 S. State Road, Suite 303, Bedford Park, IL, 60638
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