Allergy, Asthma & Immunology Clinic Address 1001 E. Primrose St., 1st Floor Springfield, MO 65807 location Get Directions Phone: 417-875-3742 Hours Monday - Friday, 8 a.m.-5 p.m. Holiday hours may vary. About CoxHealth Allergy, Asthma & Immunology is located at our Ferrell-Duncan Clinic location. Our staff of allergists, immunologists and a nurse practitioner see patients of all ages. We help patients manage allergies, asthma, immunodeficiencies and other allergy-related conditions.This location also includes our allergy injection walk-in clinic. Please note that we do close the shot clinic for major holidays and inclement weather. Also, there may be weeks in the year when the shot clinic closes due to annual conferences. These dates should be posted in the clinic well in advance so you can plan accordingly.