Over 80% of all those in Medi-Cal (more than 10 million Californians) are enrolled in a managed care plan. Variation in quality and access across plans, and by other factors such as race and ethnicity, means some enrollees are much more likely than others to get life-saving preventive care or essential treatment for chronic conditions. This collection highlights potential solutions, including how the Department of Health Care Services can hold Medi-Cal managed care plans accountable to improve quality and reduce disparities through contracting and oversight, and with effective financial incentives.