This study linked data from the Georgia Comprehensive Cancer Registry to Medicaid enrollment and claims to test whether the Breast and Cervical Cancer Prevention and Treatment Act (BCCPTA), which provided a new and quicker pathway to Medicaid eligibility for low-income breast cancer patients, led to more patients enrolling at an early stage of disease. Results based on difference-in-differences analysis indicated that Georgia's BCCPTA increased by 11 percentage points the probability of breast cancer patients enrolling in Medicaid at an early stage (p  =  .024). This effect could mean more treatment options and higher survival rates for these patients.