He created the TalkCPR.com website & app and has given a Ted Talk on why language and wording is important in palliative care. He writes for international newspapers and web based media outlets on contemporary medical topics.
Mark took part in a BBC Horizon programme on palliative care alongside Kevin Fong, and has also done extensive media work with television, radio and online resources. He has talked about medical topics at the Edinburgh Fringe Festival and at Hay Literary Festival.
A few years ago he had a brief brush with fame, when his posthumous letter to David Bowie, which covers the components of good end of life care, went viral on the internet and in global newsrooms.
The letter has been made into a classical music composition which was aired on BBC Radio 3, and has been publicly read out by various celebrities and drifters in locations including New York, London, Hay-on-Wye, Edinburgh and Berlin.
Apart from working for Velindre University NHS Trust, Cardiff University, and the Welsh End Of Life Care coalition Byw Nawr, he is also a Bevan Commission Senior Fellow. He is also the Welsh national strategic lead for Advance & Future Care Planning.
A further role is as a teaching faculty member for Harvard Medical School's Global Clinical Scholars Research Training (GCSRT) programme, and he is on the editorial board for BMJ Supportive & Palliative Care journal.
He hails from Hessen in Germany and has settled in the land of song, Wales. On occasion, he acts as an adviser for a Welsh TV soap opera, on matters medical, end of life and palliative, and has thus far choreographed the deaths of two of the programme's main characters.