Breast cancer is the most commonly occurring cancer and most common cause of cancer mortality among Korean American (KA) women, but mammography utilization among KA women remains suboptimal. Most breast cancer screening studies with KA women have been descriptive and correlational. Therefore, in this 4-year project, the effects of Korean Immigrants & Mammography—Culture-Specific Health Intervention (KIM-CHI) on adherence to recommended breast cancer screening protocols were tested. The specific aims are to: (1) compare the group receiving KIM-CHI with an attention control group on mammogram attainment outcomes including number of mammograms obtained (0, 1, or 2) and if obtained, length of time to obtain the first mammogram, at 15 months using survival analysis; (2) compare the two groups on the mediating variables of health beliefs, knowledge, self-efficacy, and spousal support at 2 weeks, 6 months, and 15 months using repeated measures multivariate analysis of variance; and (3) identify the mediating effects of health beliefs, knowledge, self-efficacy, and spousal support at 2 weeks on mammogram attainment outcomes at 15 months, using structural equation modeling. Data on mammography attainment and the mediating variables were collected at baseline and at 2-weeks, and 6- and 15-months post-baseline.