Marc Cromie, MD

Board Certification: American Board of Allergy, Asthma and Immunology and by the American Board of Pediatrics

License: Licensed to practice medicine in Tennessee and Georgia

Residency: T.C. Thompson Children’s Hospital

Fellowship: Pediatric and Adult Allergy/Immunology fellowship at the Medical College of Georgia

Medical School: Medical College of Georgia

College: University of Georgia

Joined CAC: July 2000

Dr. Marc Cromie is a double board-certified pediatric and adult allergy, asthma, and immunology specialist who has cared for patients throughout Chattanooga and North Georgia for more than 25 years. Since joining Chattanooga Allergy Clinic in 2000, he has helped thousands of children and adults manage allergies, asthma, food allergies, sinus conditions, eczema, and other immune-related conditions.

Dr. Cromie earned his medical degree from the Medical College of Georgia and completed his pediatric residency at T.C. Thompson Children’s Hospital. He later completed a pediatric and adult Allergy/Immunology fellowship at the Medical College of Georgia before joining Chattanooga Allergy Clinic in July 2000.

In July 2025, Dr. Cromie celebrated his 25th anniversary with Chattanooga Allergy Clinic, a milestone reflecting his longstanding commitment to patient care, clinical excellence, and the Chattanooga community.

In addition to caring for patients, Dr. Cromie serves as a clinical instructor at T.C. Thompson Children’s Hospital and as an instructor for the UT College of Medicine Department of Family Practice. He is a member of both the American Academy of Allergy Asthma & Immunology and the American College of Allergy Asthma & Immunology.

Throughout his career, Dr. Cromie has remained active in community and nonprofit leadership, serving with organizations including the American Lung Association, Junior Achievement, the Cystic Fibrosis Foundation, and several children’s health and research foundations. He has also served as President of the Tennessee Allergy Society and the Hamilton County Pediatrics Society.

As someone who personally experienced childhood asthma and allergies, Dr. Cromie brings a unique level of understanding and compassion to his patients and their families. His personal experience helps him relate to children and adults navigating the daily challenges of allergic disease and asthma management.

Outside the office, Dr. Cromie enjoys sports and spending time with his wife, Allison, and their five children.

Dr. Cromie and Chattanooga Allergy Clinic have been voted “Best Allergy Practice” in Chattanooga since 2009 and in North Georgia since 2011 by readers of the Chattanooga Times Free Press.