He now lives in Sydney with his wife (Jane), three daughters (Isani, Bethany and Caitlin) and son (Patrick).

He played junior rugby league in Canberra and studied primary school teaching at the Australian Catholic University.

[2] During the 2019 NRL Grand Final, with the scores at 8–all and with less than ten minutes remaining in the match, his controversial change of mind after ruling six again in favour of the Canberra Raiders proved a major turning point as the Sydney Roosters scored off the subsequent set of six to win the match 14–8.

[3] On 29 July 2021, Cummins officiated his 400th NRL Match, becoming the first referee to do so, after earlier in the season surpassing Bill Harrigan's 18-year record of 393 games.

The experienced whistleblower controlled his 443rd and last game on 2 September 2023 between the St George Illawarra Dragons and the Newcastle Knights.