Background: Prior studies have shown that racial/ethnic minorities have lower Consumer Assessments of Healthcare Providers and Systems (CAHPS) scores. Perceived discrimination may mediate the relationship between race/ethnicity and patient experiences with care. Objective: To examine the relationship between perceived discrimination based on race/ethnicity and Medicaid insurance and CAHPS reports and ratings of care. Methods: The study analyzed 2007 survey data from 1509 Florida Medicaid beneficiaries. CAHPS reports (getting needed care, timeliness of care, communication with doctor, and health plan customer service) and ratings (personal doctor, specialist care, overall health care, and health plan) of care were the primary outcome variables. Patient perceptions of discrimination based on their race/ethnicity and having Medicaid insurance were the primary independent variables. Regression analysis modeled the effect of perceptions of discrimination on CAHPS reports and ratings controlling for age, sex, education, self-rated health status, race/ethnicity, survey language, and fee-for-service enrollment. SEs were corrected for correlation within plans. Results: Medicaid beneficiaries reporting discrimination based on race/ethnicity had lower CAHPS scores, ranging from 15 points lower (on a 0-100 scale) for getting needed care to 6 points lower for specialist rating, compared with those who never experienced discrimination. Similar results were obtained for perceived discrimination based on Medicaid insurance. Conclusions: Perceptions of discrimination based on race/ethnicity and Medicaid insurance are prevalent and are associated with substantially lower CAHPS reports and ratings of care. Practices must develop and implement strategies to reduce perceived discrimination among patients. Copyright © 2012 by Lippincott Williams & Wilkins.