Over $5 million dollars from the National Disability Insurance Scheme has been handed to a lone private consulting agency, McKinsey and Company.

The US group was paid to conduct a review of the scheme’s pricing, but shadow social services minister, Jenny Macklin says there is concern of the levels of outsourcing.

Macklin says there is more work required to ensure the National Disability Insurance Scheme lives up to its promises and “many people with disability and their families feel let down and are frustrated by the problems with the NDIS rollout.”