What is the rating system used to measure plan quality and performance in Medicare?

The rating system used to measure plan quality and performance in Medicare is known as the Star Rating system. This system was implemented by the Centers for Medicare & Medicaid Services (CMS) to evaluate Medicare Advantage and Part D prescription drug plans, helping beneficiaries make informed decisions when selecting their healthcare plans.

The Star Ratings range from one to five stars, with five stars representing excellent performance and one star indicating poor performance. Factors that influence these ratings include customer service, member satisfaction, health outcomes, and the effectiveness of care. These ratings not only serve as a tool for consumers but also encourage providers to enhance their quality of care and patient outcomes in order to achieve higher ratings, thus promoting accountability within the Medicare system.

Other rating systems mentioned, such as 'Outcomes rating,' 'Quality index,' and 'Performance evaluation,' do not specifically correspond to the comprehensive and widely recognized Star Rating system that Medicare employs. Therefore, the Star Rating system is the correct answer, as it plays a crucial role in evaluating and ensuring the quality of Medicare services.