The data guru at LeadingAge was able to help us find access to dual eligibility data. MN does NOT have a higher prevalence of dual eligibles - one of the hypotheses we were researching for the cause in low star ratings. 

http://kff.org/medicaid/state-indicator/duals-as-a-of-medicare-beneficiaries/

 

This Kaiser data places us as slightly below average in the percent of Medicare beneficiaries who are dual eligibles..