Dr Mark Nathan is a Consultant Medical Oncologist at Guy's and St Thomas' NHS Foundation Trust, having joined the team in 2017. He specialises in treating breast cancer and works at Guy's Hospital, King's Hospital, and Queen Mary's Hospital in Sidcup. Dr Nathan is actively involved in the running of clinical trials at Guy's Hospital, contributing to advancements in cancer treatment.

Originally from London, Dr Nathan graduated from Bart's and The London Medical School in 2006. He completed his basic medical training in North East London before returning to St Bartholomew's Hospital for his higher Oncology training. His dedication to breast cancer research led him to spend three years obtaining his PhD as an AVON clinical research fellow at the Breakthrough Breast Cancer Research Centre. During this time, he also participated in clinics at the Royal Marsden Hospital.

Dr Nathan's areas of expertise include the management of early and metastatic breast cancer. He is proficient in a range of medical tests and treatments aimed at improving patient outcomes. His commitment to patient care and research ensures that he remains at the forefront of oncology advancements.

In his role, Dr Nathan is dedicated to providing comprehensive care to his patients, utilising the latest research and clinical practices. His interests lie in improving treatment protocols and patient quality of life through innovative clinical trials and personalised care plans.