Which vaccines does Medicare cover? UnitedHealthcare What is Original Medicare Part B? Spring is here time to get your energy back , 3 B12 shots for $39! (save 50%), B12 helps boost energy, support metabolism, and improve mood so you feel your best going into the new season , DYK your Medicare ABCs? Part A is for hospitalization insurance, Part B is for medical insurance, and Part A and Part B together are often called Original Medicare. Medicare Part C is Medicare Parts Explained: Part A, Part B, Part C, and Part D