Minister for Health James Reilly has said that there will be free GP care for all by 2016.
Speaking to RTÉ News, Minister Reilly said he could not predict every "pothole" that may arise along the way.
However, he said he is committed to achieving this target within three years.
Meanwhile, The Chairman of the Irish Medical Organisation Dr Ray Walley said there is "no hope" of reaching this target.
Dr Walley said the initiative will not be free and someone will have to pay for it.
Dr Walley said there needs to be substantial planning and sustainable resources to cover 100% of the population with some form of free health care.
He added the Minister for Health has had no meeting with the GP committee of the IMO to discuss these changes.
Mr Walley said it is "unbelievable" that there are plans for these changes without consultation with the stakeholders."