But a third of GP practices in England failed to return any data from the FFT in the last month for which data is available, figures from NHS England show.
GPonline reported in March that the first FFT results showed that nine out of 10 patients who responded would recommend their practice to family or friends.
The latest data confirm that practices have maintained this high rate of positive responses - 88% of the 1,019,161 responses received to date have been positive.
Just 6% of respondents said they would not recommend their practice in the May sample.
But the data show that just 68% of practices returned data for the latest month available - May 2015. From December 2014, it has been a contractual requirement for practices to implement the FFT.