Speaking ahead of the special LMCs conference, which takes place in London on 30 January, Dr Nagpaul warned that the current state of general practice was not tenable.
Without urgent action from the government and NHS England, the GPC chairman warned that a service relied on by 1m patients every day was facing the real threat of collapse.
Citing figures from BMA polls that reveal many plan to retire early as soaring workload becomes unbearable, Dr Nagpaul said it was clear that practice closures to date were merely the 'tip of a much bigger iceberg'.
He called for a rebalancing of NHS funding in favour of general practice and primary care, and warned that the government must take tangible action to address the fact that 'daily workload is just overwhelming and unsustainable' in general practice.
Photo: Pete Hill