Enrollment in Medicare Advantage Plans in Miami-Dade County: An Accident of Birth

Abstract Evidence from behavioral economics reveals that decision-making in health care settings can be affected by circumstances and choice architecture. This paper conducts an analysis of choice of private Medicare plans (Medicare Advantage plans) in Miami-Dade County. We provide a detailed description of the choice of MA plans available in Miami over much of the program’s history. Our analysis suggests that first becoming eligible for Medicare is the key transition point for MA, and that there is significant status quo bias in the MA market. Policy that regulates the MA market should anticipate, monitor and account for this consumer behavior.