I saw the doctor for a chronic cough.  He checked my lungs and told me a couple of things.  He put in an order for a pulmonary test.  Then he asked questions about my sleeping habits and I asked if this had to do with my cough and he said no.  He then said I should have a sleep study done for sleep apnea. I waited four months to see him, and he was more interested in having me tested for sleep apnea.  
MF Pulmonology