Seniors' Health Care Plan Protection Act of 2015

Seniors' Health Care Plan Protection Act of 2015 States the intent of Congress to: (1) continue to study and request input on the effects of socioeconomic status and dual-eligible populations on the Medicare Advantage (MA) STARS rating system before reforming it, and, pending study and input results, (2) delay Centers for Medicare and Medicaid Services authority to terminate MA plan contracts solely on the basis of performance under the STARS rating system. Amends part C (Medicare+Choice) of title XVIII (Medicare) of the Social Security Act to prohibit the Department of Health and Human Services, through the end of plan year 2018, from terminating a contract with respect to the offering of an MA plan by an MA organization solely because the plan has failed to achieve a minimum quality rating under the 5-star rating system.