MPs claim that there is no strong national leadership of diabetes services, no performance incentives for care providers and no accountability arrangements for NHS commissioners.
They added that they have seen no evidence that the new NHS structure will address these concerns.
The committee called on the Department of Health to set out how improvements on diabetes services will be delivered in the reformed NHS.
More top news
Storm Imogen will cause problems across much of the south today, but it will be calmer in the north.
David Cameron is expected to warn that voting for a "Brexit" would result in refugee camps springing up across the south-east of England.
Beyonce, Coldplay and Bruno Mars performed a medley of their hits during a powerful half-time performance at Super Bowl 50.