Dr Tim Bland, a GP in the London borough of Havering, has set up the group to provide an alternative reform agenda.
The group has set out a manifesto, outlining a 'realistic way forward for the next 50 years, not the next five'.
Dr Bland said: 'My motivation for this is that lots of people are expressing serious misgivings about the White Paper proposals. However, what is lacking is a coherent, alternative strategy.'
The manifesto says the government wants to keep existing structures in place and bring about 'rational, consensus-based, incremental change'.
It calls for a 50-year contract, in which the government commits to state-run healthcare in return for public acceptance of a reduced scope for what the NHS provides.