Medibank is undergoing a major senior management reshuffle, to improve performance and customer service.
Craig Drummond - who took over as chief executive in July - says the changes are aimed at ensuring a "clear focus and accountability" on delivering better results and customer service.
"We have a big agenda to deliver and in order to achieve this we need to have the right team in place with clear accountabilities," said Mr Drummond said in a statement on Wednesday.
"I am confident that the changes provide this focus and will drive better outcomes for our customers and the business."
The changes include chief operating officer David Koczkar taking on the role of group executive - chief customer officer and the departure of chief financial officer of four years Paul Koppelman.
Andrew Wilson, group executive of provider networks & integrated care, will now also be accountable for Medibank's strategy and innovation.
Group general counsel Mei Ramsay has been appointed group executive of legal, governance and regulatory affairs.
Kylie Bishop remains group executive of people and culture, and John Goodall will join as group executive of technology and operations, as previously announced.
All changes are effective immediately.
Medibank, Australia's biggest private health insurance provider, in August conceded it was losing customers to rivals and that it needed to lift its game to stop its market share decline.
However, the group booked a 46.4 jump in annual profit to $417.6 million, driven by higher revenue on the back of a four per cent rise in insurance premiums.
