Do I enter my FSA total as a medical expense reimbursement if it is already listed in Box 14 of my W2?

Yes. Enter it under medical reimbursements. In general, any medical expenses for which you are reimbursed, such as by your insurance or employer, or paid with pre-tax dollars, cannot be deducted. Box 14 is a catch-all box that employers mostly used for information.

Ok, thanks.  I wasn't sure if the program would already have accounted for it or not.

More than a pleasure. Hope it helped.