David Cameron needs to « get real » and ditch his « surreal obsession » with opening GP surgeries seven days a week, a senior GPs’ representative says.
The British Medical Association’s Dr Chaand Nagpaul said GP services were already at breaking point.
He will tell a conference that pledges to recruit 5,000 GPs in England would « fail dismally » as doctors were fleeing the profession.
The Department of Health said it was an « overly negative, pessimistic view ».
During the election campaign, the Conservatives pledged access to GPs between 08:00 and 20:00, seven days a week, by 2020 in England.
The party also pledged everyone over 75 would get a same-day appointment.
But the proposals have been lambasted in the first major speech by GP leaders since the election.