DJ qualified as a doctor in the UK in 1996. Since 2005 has been a practicing Emergency Physician in the National Health Service (NHS). He is a Fellow of the Royal College of Emergency Medicine in London (FRCEM). During his years of training, he also worked in a leadership development and advisory capacity with healthcare organisations, promoting a balance of compassion and rigour to healthcare leadership.

He has dedicated most of his working life to the challenges of improving healthcare, but has also worked - prior to medical school - for city financial institutions and - for a few years after qualifying - as an implementation consultant, delivering results-focused change programmes in physical industries such as manufacturing and oil-and-gas.

He endeavours to practice as a buddhist.