Doris Westerly, a patient new to Medicare, is referred to your office and states, "The girl at the front desk said I would have to pay today's charges, but that I shouldn't pay just yet. I'm very confused. Now that I'm on Medicare, I thought they would pay for my healthcare. She said I have to pay for my medical bills until I reach a certain limit. What is this limit and how do I meet it?" Answer her question.