Marilyn, age 38, is employed as an architect. For calendar year 2018, she had AGI of $204,000 and paid the following medical expenses:

Medical insurance premiums $ 7,800

Doctor bills for Peter and Esther (Marilyns parents) 7,300

Doctor and dentist bills for Marilyn 11,100

Prescription medicines for Marilyn 750

Nonprescription insulin for Marilyn 950

Peter and Esther would qualify as Marilyns dependents except that they file a joint return. Marilyns medical insurance policy does not cover them. Marilyn filed a claim for reimbursement of $6,000 of her own expenses with her insurance company in December 2018 and received the reimbursement in January 2019. What is Marilyns maximum allowable medical expense deduction for 2018?