Dr Greenwood was born and raised on a smallholding in rural Hampshire. He moved to Cardiff to undertake undergraduate medical training, graduating in 2005 and completed his training as a GP in 2010.
He spent some time travelling with his wife and working as a Locum GP in South Wales before relocating to Devon to settle and raise his family. He joined the practice in October 2015 and works 3 days per week. His particular medical interests are in Palliative care and musculoskeletal medicine. Outside of medicine he relaxes either on a bike, or sailing dinghy, or cooking and sharing good food with friends.