Mr Kasem is an experienced oncoplastic breast surgeon at King's College Hospital NHS Trust. He specialises in breast screening, family history risk assessment, rapid assessment of breast lumps, and advanced management of both benign breast disease and breast cancer. Mr Kasem has a particular interest in breast cancer surgery, breast reconstruction surgery, and breast aesthetic surgery. He collaborates with a highly qualified multidisciplinary team to provide holistic, quality care to his patients.

Mr Kasem performs a variety of surgeries, including breast cancer surgery, mastectomy, breast lumpectomy, breast reduction, breast mastopexy (uplift), breast augmentation, breast lipomodelling and lipofilling with fat grafting, and breast cancer surgery with immediate and delayed breast reconstruction. In 2014, he was honoured with the annual award for outstanding patient experience.

Mr Kasem received his training at the Breast Oncoplastic Unit at the Princess Royal University Hospital and spent 18 months with the oncoplastic breast surgery team at the Royal Marsden Hospital. He subsequently joined the South-East London Breast Cancer Screening at King's College University Hospital and the oncoplastic surgery team at St Thomas' Hospital, where he performed breast oncology procedures for breast cancer patients.

Dedicated to continuous learning, Mr Kasem has attended the European Institute of Oncology in Milan and several international oncoplastic breast surgery centres. He has published numerous articles in medical journals on breast care, breast surgery, and breast cancer management. Additionally, Mr Kasem serves as an Honorary Senior Clinical Lecturer at King’s College Medical School.