Croatia started implementing the national programs for early breast cancer detection in 2006, early detection of colon cancer and early detection of cervical cancer. A possible way to improve the adherence of the women to the screening on breast cancer could be by transferring the responsibility for the program implementation from the public health institutes to family physicians. The Project: "Model of early cancer detection integrated in a practice of family physician", was carried out by the Department of Family Medicine of the Osijek University School of Medicine. The results have shown that responsiveness of women invited to do preventive mammography was significantly higher in the experimental than in the control group. The central role of FM in the implementation of preventive programmes has already been recognized in many countries as an advantage from the organizational aspects and by means of decreased expenditure, compared to the vertical programmes with strict formal control centered to the public institutions.