Federal Health Minister Sussan Ley is due to announce any day a decision on the industry's call for premium rises of 6 to 7 per cent.
Medibank chief executive George Savvides said one way to stem falling revenue was to put pricing pressure on hospitals, where about $4 billion of its $5 billion in annual claims originates.
"If you want the largest health insurer and largest customer base to come to your hospital, you can't just charge us the same price that you charge the smallest health funds," he said. "It takes the breath away of the CEO sitting across the table at the hospital group, because they have been charging the same prices pretty well year on year."
Medibank shares fell after it posted a A$151.2 million ($157 million) net profit for the six months to December 31, and reaffirmed its guidance of a full year profit of A$258 million.
Revenue up
•Pro-forma net profit of A$151.2m, up 11 per cent.
•Revenue of A$3.27b, up 3.8 per cent.
•No interim dividend
- AAP