He is a Vice President of International Society of Dermatology, a Member of IADVL and ACSI, Fellow of IADVL Academy of Dermatology, International Fellow of American Academy of Dermatology, Foundation ellow of Asian Academy of Dermatology and Venereology and member of European Academy of Dermatology and Venereology. Dr. Lahiri is a Fellow of all three Royal College of England, London, Glasgow and Edinburg. He is also a Senior Consultant Dermatologist of Apollo Gleneagles Hospital, Kolkata and Honorary Director, WIZDERM.