Choose an area of practice Allergy/Immunology Anesthesiology Cardiology Cardiovascular Dental Dermatology Ear, Nose & Throat Emergency Medicine Endocrinology Endodontics Family Practice Gastroenterology General Surgery Hematology Hospitalists Infectious Disease Internal Medicine Medical Oncology Neonatology Nephrology Neurology Neurosurgery Obstetrics & Gynecology Ophthalmology Oral & Maxillofacial Surgery Orthodontics Orthopedics Pain Management Pathology Pediatric Allergy Pediatric Emergency Medicine Pediatric Dentistry Pediatrics Physical Medicine/Rehabilitation Plastic & Reconstructive Surgery Podiatry Psychiatry Pulmonary Medicine Radiation Oncology / Radiation Therapy Radiology Rheumatology Sports Medicine Thoracic Urology Vascular Surgery Pediatric Allergy William L. Johnson, MD Gateway Asthma and Allergy Relief 2900 Frank Scott Parkway West Suite 914 Belleville, IL 62223 (618) 277-1413 web site