Dr Gaya qualified at St George’s (University of London) where he was awarded a distinction and several academic prizes. He trained in Clinical Oncology at Imperial College and St Bartholomew’s Hospital and subsequently undertook a Cancer Research UK MD Fellowship at University College London. He was a consultant clinical oncologist at Guy's and St Thomas' Hospitals for 15 years.

Dr Gaya treats all gastrointestinal tumours (e.g. oesophagus, stomach, liver, pancreas, colon, rectum, anus) using chemotherapy, radiotherapy, immunotherapy, biological therapies, and data from tumour genome analysis. Dr Gaya’s main interests are in the areas of functional cancer imaging (Kings College, London), and combining immunotherapy with radiation treatment.

He is heavily involved with the implementation and usage of the latest radiotherapy techniques such as MRI guided radiotherapy (MRIdian), proton therapy and stereotactic body radiosurgery (gamma knife, cyberknife). He has published and peer-reviewed widely for international journals.

He is an active member of ASTRO, the Radiosurgery Society and the International Stereotactic Radiosurgery Society. Dr Gaya is also interested in the introduction of advanced technology such as AI and machine learning to medicine and is a big supporter of Exponential Medicine and the Singularity University programs.

Offering both drug-based and radiation-based therapies and close liaison with surgical and interventional radiology, he is a leading authority on the unique combination of multiple treatment modalities and personalised tumour molecular profiling into a treatment package for each patient.

• Stereotactic radiotherapy
• Immunotherapy
• Multimodality personalised cancer treatment

• St Georges Hospital, University of London 1995

Two children, enjoys travelling, good food and wine, tennis and football.