No. Medicare benefits are tax free; they don’t count as income for determining filing and are not taxed. What’s more, Medicare premiums are tax deductible if you itemize your personal deductions and don’t claim the standard deduction.
Gross income less allowable adjustments, such as IRA, alimony, and Keogh deductions. AGI determines whether various tax benefits are phased out, such as personal exemptions, itemized deductions, and the rental loss allowance and modified adjusted gross income (MAGI).