TurboTax will not make that calculation - you will have to calculate the amount (40.42% X monthly fees X 12 = 2020 Medical Expense Deduction for your community's healthcare services).
Make the entry in the Medical Expenses interview of Deductions and Credits. See Where do I enter my medical expenses? for instructions.
(The letter you received may have already made the calculation for you, based on your monthly fees).
