MIDOC ended operations at the end of last year.
A new operator has been found for out-of-hours GP services in the majority of the midlands.
CareDoc will now handle the services in Offaly, Westmeath and Longford, taking over from MedDoc.
Out-of-hours GP services in the region had been managed by MIDOC, before the group ceased trading at the end of last year.
The HSE says there'll be no change to the appointment only system provided in centres in Tullamore, Mullingar and Longford.
Out-of-hours GP services in Laois will continue to be operated by MedDoc, and the Health Service says there'll also be no changes to the centre in Portlaoise.
It says the choice of moving to CareDoc and MedDoc was the decision of local GP's.
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