Prof. Prasad Kumarasinghe is a dermatologist who specialises in phototherapy, surgery for skin cancers, melanoma, skin diseases, patch testing for contact dermatitis, paediatric dermatology, pigmentary disorders, skin infections and vitiligo.

He is a Fellow of the Australasian College of Dermatologists, The Ceylon College of Physicians, Academy of Medicine Singapore and Sri Lanka College of Dermatologists. He is currently a Director of International Society of Dermatology and a Council Member of the International Federation of Pigment Cell Societies.