HSA Contributions do not reduce my income

My W2 line 12c shows $6000 (W) for Employer and Payroll Contributions.  I contributed $4000 of this amount and my employer contributed $2000.  I don't see where this amount has reduced my taxable income.  My taxable income on my W2 Box 1 is reduced only by the amount of my 401k contributions.  And that is the amount I see in Turbo Tax in the Federal Tax Summary.  I do not see any deduction for my supposed tax free contribution.  

 

It certainly appears that I am still being taxed for the amount I contributed to my HSA.