Racial and ethnic minority groups and low-income persons experience significantly higher cancer mortality rates than other Americans. These disparities are due to at least two factors: (1) delays in follow-up of abnormal cancer screening results and (2) suboptimal management of diagnosed cancer. Patient navigation represents a promising means for addressing disparities by improving cancer related management for minority and other underserved populations. However, patient navigation for cancer has yet to be evaluated through a well-designed randomized controlled trial. Furthermore, patient navigation is likely to prove most effective and sustainable when it is integrated into primary care and helps patients be more active in their care. This combination of patient empowerment and enablement is referred to as "activation." The aim of this project is to evaluate the effectiveness and costs of such a program in a rigorous manner so that the results can be generalized and the program can be widely disseminated and implemented. we will develop, implement, and evaluate a primary care-based, patient navigation-activation program using specially-trained community health workers (CHWs). We propose to investigate the effect of this intervention on timing and quality of cancer-related care. Secondary aims examine the impact of navigation on disparities in care, improvement in patient activation and total costs. Project findings will inform national policy regarding patient navigation for cancer.