Camden PCT has sent letters to all patients who have not visited their GP in the past year warning them they will be taken off the list unless they confirm that they are still living in the area.
The list-cleaning programme, which was piloted at three surgeries earlier this year, is a bid to cut the number of residents who have moved on but for whom GPs are still being paid.
The project has now been rolled out across the borough.
A spokeswoman for Camden PCT said letters were sent out in 17 different languages and that practices were given eight weeks to prove a patient did exist before their record was withdrawn.
But the PCT has come under fire from GPs who say the process is heavy handed.
Read full article - Income cut by quarter following list cleaning