Kolkata is the third most populous metropolitan area in India. According to 2011 census, population of Kolkata is 4.5 million but the accumulative population of the city and its suburban areas is 14.1 million. It houses Calcutta Stock Exchange and the city is also a hub of commercial and financial services of East and North East India. GDP of Kolkata was third highest after Mumbai and Delhi in 2008. This city also boasts a well-developed healthcare system that includes air ambulance services in Kolkata to rescue critically ill patients from their homes and accident areas.
This city has a total of 48 government hospitals but the number of private hospitals is approximately 400 and most of the hospitals have world-class healthcare facilities. Together these hospitals provide around 30,000 beds and the number of beds available per 10,000 people is 62. It is higher than the national average. Recently air transfer service for patients was started to boost the healthcare infrastructure of the city. Also train ambulance Kolkata is introduced to further improve the medical services. Together these two services can reduce travel time for patients and also improve mobility of those that need medical help for travelling. Now the city is prepared to meet any medical emergency.
Airport: Netaji Subhas Chandra Bose International Airport located 16 kilometer north-east of the city in Dum Dum operates domestic and international flights.