Over a third of practices (37%) may end up not accepting new patients in the near future, a Pulse survey of GPs has revealed.
When asked whether their practice has looked at the option of temporary list closure over the past year, 9% of 500 GP respondents said they 'have already done it'.
And a further 28% said they 'are considering it'.
Meanwhile, NHS England approved fewer temporary list closure requests in 2016/17 compared to the year before.
In all, 145 requests to close lists were granted last year, compared to 175 in 2015/16, a Freedom of Information request to NHS England has revealed.
Proportionally, this means that NHS England turned down 37% of requests in the last year.
This compares to 30% in 2013 and 20% in 2012, the last time Pulse were provided with figures.
The news comes as the BMA has signalled that it will not go ahead to organise the closing of practice lists in a mass action.
This followed its own GP survey finding 54% of practices in England would be willing to close their lists temporarily, while 44% said they would be willing to close lists permanently.
A number of GPs told Pulse they had applied to close their lists but were told by NHS England or health boards that they were not allowed.