One in 10 people with a Medicare card have opted-out of the new My Health Record digital health system.

More than 2.5 million Australians have decided not to have their digital records shared between providers.

The opt-out tally has more than doubled in the last 4 months.

Caroline Edwards from the Department of Health says authorities expected some not to join.

“The Minister indicated in July he was looking for a 90 per cent participation record,” she told Senate estimates in Canberra.

“That's pretty much where we've landed.”

With the opt-out period now closed, all Australians will now have records automatically created for them.

Individuals will soon be able to log in and manage a range of preferences, permanently freeze their record, and have their health providers upload and view information.