Dr Johnny Marshall, chair of the NAPC since 2008, has recently emerged as one of the country's strongest voices in favour of the Government's NHS reforms.
A GP in Wendover, Buckinghamshire, he now leads an increasingly confident organisation, going head to head with the NHS Alliance in persuading consortia to sign up, and calling for those organisations to be given as much freedom as possible by the new NHS Commissioning Board.
This stance has brought critics as well as admirers though, with some grassroots GPs alarmed at his calls for consortia to root out poor performers.
This list appeared as part of Pulse's top 50 influential GPs 2011. Click here to see the rest of the list, and the top 20 influential non-GPs.