John T. McMahan, MD, FACS

After completing his undergraduate studies at the University of South Carolina, Dr. McMahan received his degree from the Medical University of South Carolina. Following medical school, he attended Northwestern University in Chicago where he completed a surgical residency in Otolaryngology–Head and Neck Surgery and a fellowship in Head and Neck Oncology. 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.

Dr. McMahan is 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.

Daniel G. Carothers, MD, FACS

Dr. Carothers completed his undergraduate studies at DePauw University in Greencastle, Indiana. He attained his medical degree from The Ohio State University College of Medicine. His four-year graduate training as a resident physician was completed at the University of Iowa, Department of Otolaryngology–Head and Neck Surgery.

Dr. Carothers completed his Fellowship in Rhinology under the directorship of Dr. McMahan at Northwestern Nasal + Sinus. He is a board-certified Otolaryngologist, Assistant Professor of Otolaryngology–Head and Neck Surgery at Northwestern University Medical School, and Fellow of the American College of Surgeons.

His research has focused on diseases of the nose and sinuses. He has co-authored publications in the fields of innate nasal mucosal defenses and immunodeficiency states in refractory sinusitis. Dr. Carothers has also been involved in numerous educational symposia.

We are pleased to have such an outstanding physician join our practice.

Links to professional association websites

American Academy of Otolaryngology–Head and Neck Surgery
The world's largest society of physicians who treat disorders of the ear, nose and throat and related structures of the head and neck.

American College of Surgeons
A scientific and educational association of surgeons founded in 1913 to improve the quality of care for the surgical patient by setting high standards for surgical education and practice.

American Academy of Allergy Asthma and Immunology
The largest professional medical specialty organization in the US representing allergists, asthma specialists, clinical immunologists, allied health professionals and others with a special interest in the research and treatment of allergic disease.