question: My sister-in-law has COPD. She has been going to Columbia Presbyterian In NYC and they are recommending a lung reduction. The doctor, Ginsberg, is not covered by her insurance thought the hospital is. She was told to see a Dr. Billinger in Stony Brook University and has an appointment to see him. We were told only Columbia did this procedure and now Stony Brook is in the picture. we want the best treatment and result from this and want to know how we can find out if the Dr Billinger is proficient in the lung reduction procedure and would she be better served at Columbia.