Doctors' practices in Whanau Ora collectives have for the first time performed as well as other GP practices in the key area of breast screening.
A Health Ministry report said breast-screening for high-needs Maori and Pacific women helped make the result the most successful since 2012.
The report said the percentage of patients getting mammograms in Whanau Ora practices rose by 3.9 percent in the past year, compared to 1.2 percent for a national sample.
The Whanau Ora practices also increased their provision of cardiovascular risk assessments, diabetes reviews and advice to stop smoking.
The report said there was more to do but it was a positive result, given that 60 percent of patients are Maori and Pasifika, and often have high needs.