Dr Barrett is a Fellow of the Australasian College of Dermatologists (FACD).

Dr Barrett completed his medical training at the University of Newcastle following undergraduate studies in economics, and continued his prevocational training within Hunter New England Health. Throughout his dermatology training Dr Barrett has worked at the Skin and Cancer Foundation, Westmead Children’s Hospital, and the Royal Newcastle Centre. He has completed rural rotations throughout NSW including Lismore, Port Macquarie, Walgett, Dubbo, Orange and with the Aboriginal Medical Service.

Dr Barrett is actively engaged in research, having had multiple papers published in domestic and international dermatology journals, and continues to be involved in the education of junior doctors and dermatology trainees through his work at the John Hunter Hospital, where he works as a Visiting Medical Officer.

Dr Barrett is a trained in Mohs Micrographic Surgery, offering consultations at Frontier Dermatology and Mohs surgical procedures at Ramsay Surgical Centre Charlestown.

Dr Barrett manages all conditions involving the skin, hair and nails including eczema, psoriasis, hidradenitis suppurativa, hyperhidrosis, acne, and paediatric dermatology. He has a special interest in skin cancer management, autoimmune bullous disease, and cutaneous lymphomas.