Jeffrey was born in Tauranga, completed his schooling in Auckland and then studied medicine at Otago University. After working in Auckland hospitals for 3 years, Jeffrey travelled and worked in Papua New Guinea and various hospitals in the United Kingdom. After returning to New Zealand in 1977, he established a general practice in Katikati from his home. This practice grew to become the Katikati Medical Centre, with new purpose built premises in 1982, and over 9 doctors. Early onset Parkinson’s forced Jeffrey to retire at age 62.
Jeffrey was instrumental in setting up the Katikati Squash Club, Aongatete Lodge, Katikati St John Resource Centre, and the Uretara Estuary Managers. Jeffrey enjoyed snow skiing, travelling, and had a love of old Jaguar cars.