The plans would mean GPs see and treat the majority of patients arriving at Hammersmith and Charing Cross hospitals' emergency wards.
A group of GPs are bidding, with England's largest trust, Imperial College Healthcare NHS Trust, to run all 'unscheduled' primary care for Hammersmith and Fulham PCT, in a bid to reduce A&E attendance.
GPC chairman Dr Laurence Buckman said he thought it was an idea that would be popular with other PCTs.
'I'm sure every emergency ward around the country will have a GP practice in it within a few years,' he said.
However, he added: 'Mixing up primary care and casualty is a bad idea. It is not what GPs are there for.'
West London has the highest rate of A&E attendance per head of population in England. Around 1,400 patients a week are seen at Charing Cross A&E.
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