Born in Whanganui in 1900, Sir Arthur attended Collegiate School before studying medicine at Oxford University. He became a distinguished surgeon at St Mary's Hospital in London and served with the Royal Medical Corps in World War II.
He went on to become surgeon to King George VI and Queen Elizabeth II, and was president of the British Medical Association and the Royal College of Surgeons of England – the first person to hold the roles simultaneously.
In 1967 he became the first New Zealand-born governor-general and in 1973 he was created a life peer, taking the title Baron Porritt of Wanganui and Hampstead.
Sir Arthur, who died in 1994, also had a notable athletics career, winning an Olympic bronze medal at the Paris Games of 1924 and serving on the International Olympic Committee for more than 30 years.
Bloomfield said his visit would also be "an opportunity to recognise the hard work of the Whanganui District Health Board and its staff during 2020".
"Covid-19 has been a challenge for us all, but the commitment from across the health sector and from the team of five million has made the difference."
Bloomfield's lecture at the Whanganui War Memorial Centre is free and open to everyone.
The lecture begins at 7pm on Thursday and will focus on "Lessons, life and leadership from Covid-19".