My W-2 has different box numbers, nothing corresponds to questions from IRS and no mention of Medicare. What do I do?

[Lastditch46]

W-2 box 1 shows gross distribution. Fed Income Tax withheld is in Box 4 not box 2 shown here with TurboTax.

[xmasbaby0]

What document are you really trying to enter?   Is it some kind of a 1099?   A SSSA1099 from Social Security perhaps?    Or a 1099R for retirement income?

[Critter-3]

Stop  trying to force a 1099-R onto a W-2 screen ... square pegs do not fit in round holes.  

Enter a 1099-R here:

Federal Taxes,
Wages & Income
I’ll choose what I work on (if that screen comes up),
Retirement Plans & Social Security,
IRA, 401(k), Pension Plan Withdrawals (1099-R).

OR Use the "Tools" menu (if online version under My Account) and then "Search Topics" for "1099-R" which will take you to the same place.

Be sure to choose which spouse the 1099-R is for if this is a joint tax return.
Be sure to pick the correct 1099-R type: Standard 1099-R, CSA-1099-R, CSF-1099-R, RRB-1099-R.

[NOTE: When you get to the "Your 1099-R Entries" screen where you can add another 1099-R, use "continue" to keep going as there are additional interview questions after that screen in most cases. You can always return as shown above.]