In a letter to all PMS GPs last month, Coventry PCT said practices that were unable to agree changes would be switched to GMS contracts with no MPIG.
A total of 31 out of 63 practices in the PCT are PMS.
Practices fear they will be forced to cut services. More than 90 per cent of existing GMS practices rely on MPIG top-ups to ensure that they do not receive less core funding under the new contract than they did under the old Red Book.
Last month GP reported that all PMS GPs in Suffolk were set to have their contracts renegotiated and the DoH has told PCTs to consider axing PMS contracts where they were not comparable in cost to GMS.
Coventry PCT wrote to PMS GPs last month to give 'six months notice from 22 January 2007 to cease your PMS contract'.
PMS contracts in Coventry were altered in 2004 to include a clause stipulating that they can be terminated 'six months after notice is given to the other party'. But GPs believe they were misled into agreeing to this.