Final answer:
Medicare Part A covers Joseph's inpatient hospital stay expenses, but it requires him to pay deductibles and copayments, and there are no limits on total costs.
Step-by-step explanation:
The part of Medicare that helps cover the costs of Joseph's inpatient hospital stay is Medicare Part A, which is designed to pay for hospital charges for individuals who are eligible for Social Security benefits. This aspect of Medicare is commonly referred to as Hospital Insurance and is funded by payroll deductions and contributions from employers. While it assists with hospital-related expenses, beneficiaries are still responsible for deductibles and copayments. Medicare Part A does not impose limits on the total costs that an individual can incur, potentially leaving beneficiaries with significant out-of-pocket expenses in the absence of supplemental insurance or additional coverage.