Dr. Marwah completed MD (Paediatrics) from Maulana Azad Medical College, New Delhi. He has fellowship in Paediatric Cardiology from Escorts Hospital, New Delhi and Royal Children's Hospital, University of Melbourne, Australia.
Dr. Marwah has experience of more than 20 years in treating patients with congenital and acquired heart disease. He has performed more than 2000 diagnostic cardiac catheterizations in patients with complex cardiac defects and approximately 1200 interventional cardiac catheterizations including device closure of atrial septal defects, device and coil closure of patent ductus arteriosus, balloon dilatation of aortic valve, pulmonary valves and coarctation of aorta. He has also performed many neonatal interventions including balloon atrial septostomy, dilatation of critical aortic and pulmonary stenosis. He also carried out Fenestration of Fontan circuit and stenting of the bronchi, first ever done at Fortis Escorts Heart Institute. His expertise includes non invasive imaging of complex congenital heart defects and fetal echocardiography.
Dr. Marwah has been an invited faculty at various lectures. He has keen interest in research and publication and has 18 research papers published in various national and international journals to his credit.