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About Us

Allergy Physicians & Support Staff

Karen H. Calhoun, MD, FACS, FAAOA

Dr. Calhoun is a Professor in the Department of Otolaryngology Head & Neck Surgery, Division of Sinus and Allergy.  She is one of the top otolaryngic allergists in the nation.  She is the former president of the American Society of Geriatric Otolaryngology, former vice-president of the American Academy of Otolaryngology-Head and Neck Surgery, former president of the Society of University Otolaryngologists, and one of the leading innovators in improving allergy therapy in the field of otolaryngology.  She is also one of the nation's leading researchers in allergy, having published over 100 articles in the field of Otolaryngology.  She is recognized as one of the nation's top physicians.

Dr. Calhoun graduated from the University of Louisville School of Medicine, and completed her residency and fellowship training at the University of Texas Medical Branch in Galveston.  She is board certified in Otolaryngology Head & Neck Surgery and is a fellow of the American Rhinologic Society, the American Academy of Facial Plastic and Reconstructive Surgery, and the American Academy of Otolaryngic Allergy.  

Dr. Calhoun's clinical expertise includes all aspects of allergic disease affecting the upper airway, including nasal obstruction, runny nose, hay-fever, post-nasal drip, inhalant and food allergies, urticaria (hives), angioedema and asthma.  She offers immunotherapy both in the traditional allergy shot, and in the newer under-the-tongue drops (sublingual immunotherapy or SLIT).

Minka Schofield, MD, FAAOA

Minka Schofield, MD, is an Assistant Professor in the Department of Otolaryngology-Head and Neck Surgery at The Ohio State University College of Medicine.  Dr. Schofield attended medical school at The Ohio State University College of Medicine after graduating from Duke University with a degree in Biology.  While in medical school she was awarded The Ohio State University Department of Otolaryngology Outstanding Student Award.  During her otolaryngology residency training she was awarded the American Society Pediatric Otolaryngology Research Grant, the Society of Pediatric Radiology Award for Outstanding Basic Science Research Paper, and was a Finalist in the William H. Saunder’s Resident Research Competition.  After completing her residency, she was briefly in private practice in Maryland, where she twice earned the Kaiser Permanente Mid-Atlantic Group Physician Excellence Award. 

Dr. Schofield's clinical expertise includes nasal allergy, nasal obstruction, rhinosinusitis, glandular disorders (thyroid, parathyroid, parotid and other salivary glands, and sleep-disordered breathing. 



Elizabeth Boise RN, BSN, AE-C
Allergy Nurse, Certified Asthma Educator


Carissa Powell-Kelly
Assistant to Karen Calhoun, MD, FACS, FAAOA

Connie Cleary
Assistant to Minka Schofield, MD, FAAOA