Dr Tarr graduated in medicine at the University of Queensland in 1972. He obtained a D. Obs (RCOG) in 1975, and the specialist MRCOG qualification in London in 1980.
He returned to Australia in 1981, the FRACOG following in 1982 & the FRANZCOG in 1998. He has been in practice as a Specialist Obstetrician / Gynaecologist on the Sunshine Coast since 1982 but retired from these in 2015.
Dr Tarr is a fertility specialist for IVF Sunshine Coast and a Specialist with Queensland Fertility Group, and has performed Circumcisions for over forty years.