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Dr Bangar has participated in a number of charity projects.

Perhaps his most significant input is with Slumdoctor Project

Slumdoctor Project is the name of a charity registered in the United Kingdom. Slumdoctor Project specialises in delivering medical care to slum communities in India and the developing world. Dr Bangar formed this charity, and has been running it for over 10 years. Medical Camps are held annually, treatment is funded. Detailed information about the charity can be found by following the links below both on the Slumdoctor Project Facebook page (most up to date) and on the Slumdoctor Project web page, links to which can be found below.

Dr Bangar is medical advisor to Sant Sarwan Dass Charitable hospital, and Sant Sarwan Dass eye hospital, both in Jalandhar, Punjab, India. Both hospitals having been set up and run on a  purely charitable basis.