1. What is Triple-S Advantage? Posted on September 11, 2017 at 12:15 pm.Written by advantage_admin It is a Medicare Advantage Plan provided under contract with Medicare and the Health Insurance Plan from the government of Puerto Rico (Medicaid). It provides 100% Medicare coverage, but it extends the Original Medicare benefits and provides coverage for areas not covered by Medicare. Post navigation 3. What is the Coverage Gap Stage?4. What is Medicare Secondary Payer?