August 10, 2026 · JAMA internal medicine · DOI: 10.1001/jamainternmed.2026.3332

Medicare Advantage and Type 2 Diabetes Outcomes

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The authors aimed to determine whether Medicare Advantage (MA) coverage leads to better outcomes for individuals with type 2 diabetes (T2D) compared to Original Medicare (OM). Their longitudinal cohort study found no significant differences in key health metrics such as HbA1c, blood pressure, and LDL cholesterol, nor in social determinants of health like food insecurity and housing instability, between the two groups after 12 months. This raises concerns about the effectiveness of the higher spending associated with MA in improving health outcomes for T2D patients.

Seth A Berkowitz, Myklynn LaPoint, Marlena L Kuhn, Sanjay Basu, Michael G Hudgens, Rachel Gold, Sungchul Park

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