"We are very proud to see our women leading the way in academic spaces around the world," the organisation said.
Not-for-profit Melanesian Women Today says it represents Melanesian women, mothers and girls throughout the South Pacific and the rest of the world.
"Thank you for your kind words, it is always a privilege to represent our community and people in work, to be agents of change where you can be. Very best wishes to the Melanesian women community you represent," Dr Geia said in response to the Twitter posting.
In 2020, Dr Geia was named winner of the Aboriginal and Torres Strait Island Award for 2020 by who Suicide Prevention Australia.
Dr Geia is an Aboriginal and Torres Strait Islander woman born and raised on Palm Island Queensland, a forced Aboriginal community under government legislation (1918 - early 1980s) and now home to the Bwgcolman people.
She is an experienced health professional in indigenous health employed as the academic lead for Aboriginal and Torres Strait Islander Health, College of Health Care Sciences at James Cook University, Townsville, Queensland.