Papua New Guinea Prime Minister Peter O'Neill said at the opening that the delivery of universal healthcare was a central goal of his government.
"Right around Papua New Guinea, we have been opening these new medical centres to assist people in rural and remote areas", O'Neill said.
"As a government, five years ago we set out to change healthcare delivery, to deliver healthcare to our grassroots, and this is happening."
He warned against promises made by other candidates regarding education and healthcare.
O'Neill said many of candidates claimed they would change the economy or improve development, but had no plan.
"Looking at the health centre we have opened in South Wiru today … we know that this centre will make a massive different to the lives of local people.
"Districts and provinces need to keep working with the national government to identify funding, and use the DSIPs and PSIPs to deliver better healthcare around the country."
PNG's 2017 national and local level government election will be held between 24 June and 8 July.