Family medical provider in Centralia, IL Alison Davison is a certified physician's assistant who specializes in Family Medicine. She received her degree from Southern Illinois University in Carbondale, IL. Alison treats patients of all ages, and offers routine preventive care, including health-risk assessments, immunizations and screening tests as well as management of chronic illnesses such as: diabetes, asthma, ADHD and heart disease. Medical Interests: ADHD Attention deficit hyperactivity disorder, Asthma, Diabetes management, Health risk assessments, Heart disease prevention, Management of chronic illness, Preventive care, Primary care