If you are receiving Social Security, then the Medicare premiums paid monthly from your SS already flowed to the Medical Expenses on your return. Do not "double enter" them.
1. The premiums must have been paid from your own funds, such as your social security check and you must not have received any extra help in paying the premiums.
2. Only certain types of Medicare premiums apply. Medicare B and Medicare D premiums are both usually deductible. Please see IRS Publication 502 for more information. https://www.irs.gov/publications/p502/
Transportation Expenses
1.Transportation expense must be used primarily for, and essential to, medical care.
2. If you drive: You can include your out-of-pocket expenses for gas and oil. Or, you can claim the standard deduction (19 cents per mile) driven for medical purposes You can't include depreciation, insurance, general repair, or maintenance expenses. You can add parking fees and tolls to your medical expenses whether you use out-of-pocket costs or the standard mileage rate.
3.If you don't drive: You can include bus, taxi, train, or plane fares or ambulance service, and transportation expenses of a nurse or other person who can give injections, medications, or other treatment required by a patient who is traveling to get medical care and is unable to travel alone.
Here is a Turbo Tax link that explains where to enter the medical deductions. https://ttlc.intuit.com/replies/4774888
Please view my screenshot as well.
[edited, 01/20/17]