9891 Broken Land Pkwy, Suite 100. Columbia, MD 21046. 410-730-6000. during the COVID-19 pandemic. We treat patients with allergic rhinitis (hay fever), asthma, food allergy, eczema, bee sting allergy, drug allergy, allergic contact dermatitis. We also continue to provide consultations for our peanut oral immunotherapy (OIT) program..