Mark is the Global Chief Health Officer for IBM. He has over 20 years' experience as an NHS General Practitioner in the NHS. He has a long-standing interest in informatics, health policy and system redesign and this has led him to work nationally for 15 years in a number of clinical leadership roles at the Department of Health, Cabinet Office and, most recently, as executive medical director of NHS Digital. He has provided the clinical leadership on a number of major projects (Choose and Book , GPES, Summary Care Record , General Practice Quality and Outcomes framework)

Mark led an initiative with the US government on common data and health technology standards which led to a landmark agreement between the UK and US governments. He led the health transparency initiatives from cabinet office which led to some of the largest open data initiatives in the world. He was European Medical Director of the global health informatics specialist MedeAnalytics between 2014 and 2017 specialising in population health. He chaired the health analytics committee within the industry group TechUK.

In 2003 he founded one of the largest social enterprise providers in the UK – Local Care Direct, which developed an early model of integrated urgent care using multi-professional groups which continues to cover a population of 3 million people.

He is a non-executive director and deputy chair of the British Medical Journal.