Yes, co-pays for doctor visits are eligible medical expenses.
You can enter the expenses in TurboTax Online here:
- Navigate to Federal > Deductions & Credits > Medical Expenses > Start or Edit
- Enter all the expenses you have as you go through the categories
- On the screen "How much did you spend on insurance premiums?" you can enter the health insurance premiums
Note that in order to claim medical expenses you must itemize deductions and only the expenses over 7.5% of your AGI are deductible.