text: An Orthopedic doctor treats bone injuries.  A Radiologist is a doctor that interprets x-rays. A Pulmonologist is a doctor that treats lung ailments.  You need to go to a family doctor if you think you have a broken rib.  You may have pneumonia and a broken rib.  A family doctor will give you a prescription for an x-ray, so he/she can see what is wrong.  A family doctor will listen to your lungs and be able to detect asthma or pneumonia.