The protest, on Thursday 17 February, will add to growing pressure on the BMA to change its policy of 'critical engagement' to a more hostile stance.
The campaigners will meet from 6pm ahead of a debate held by the BMA's London Regional Council. At the debate, health minister Simon Burns, shadow health minister Diane Abbott and BMA chairman Dr Hamish Meldrum will discuss the reforms.
Organiser and Medical Practitioner's Union president Dr Ron Singer said the aim of the protest was 'to support the BMA decision makers to unequivocally reject the ill-thought out legislation'.
A flyer for Keep our NHS Public's protest calls for doctors to take action against the bill. 'Some 60 per cent of doctors already oppose the plans. If doctors oppose the plans, they become unworkable,' it says.
The protest comes amid speculation in the Guardian that Dr Meldrum will have to resign if his policy of 'critical engagement' is overturned at a Special Representative Meeting in March.
Last month police were called as Dr Singer attempted to hand a petition to health secretary Andrew Lansley at the DoH's Whitehall HQ.