Dr. Ranjan K. Das is a Pulmonologist and Critical Care Medicine in Ali…read morepore, Kolkata and has an experience of 40 years in these fields. Dr. Ranjan K. Das practices at The Calcutta Medical Research Institute in Alipore, Kolkata. He completed MBBS from Maulana Azad Medical Collage in 1977,MD - Tuberculosis & Respiratory Diseases/Medicine from Delhi University in 1982 and MBBS from Maulana Azad Medical College in 1977.read less