Dr Chai Gin Tsen is a Senior Consultant Respiratory Physician and Intensivist. He leads the interstitial lung disease service at Tan Tock Seng Hospital.

He is the core faculty member of the NHG Health Respiratory Medicine Senior Residency Programme. He is also an Adjunct Lecturer at Lee Kong Chian School of Medicine, Nanyang Technological University and Clinical Senior Lecturer at Yong Loo Lin School of Medicine, National University of Singapore.