Independence Blue Cross Medicare. We put our members first … and it shows. It’s not easy to get a 5-star rating from the Centers for Medicare and Medicaid Services (CMS). But that’s the score they’ve given to Keystone 65 HMO plans from Independence Blue Cross! Plans earning 5 stars are considered to be among the best Medicare Advantage plans in the country. That means these Medicare Advantage plans offer some of the best service and support available in our area. It also means you can switch to a Keystone 65 HMO plan now through November 30. Keystone 65 is the largest Medicare Advantage HMO plan in the Philadelphia five-county region to earn 5 out of 5 stars. This perfect score reflects our ongoing commitment to provide highâ€quality medical and prescription drug coverage that meets or exceeds all CMS quality benchmarks. We will staff our booth with a licensed agent who will have care packs that include a reusable shopping tote, hand sanitizer, pen and contact information.