Lung infections affect the lungs and cause breathing difficulties. Some of the most common lung infections, such as bronchitis, can be easily diagnosed and treated by primary care providers. However, complex lung infections require the expertise of a pulmonologist for its management and treatment. A pulmonologist is usually needed when patients develop lung infections, such as bronchitis with COPD or heart disease, pneumonia, or tuberculosis. Doctors For Lung Infection in Navi Mumbai.