To find the amount of income tax that the doctor has to pay, we can use the formula:
\[ \text{Income Tax} = \text{Annual Income} \times \text{Tax Rate} \]
Given that the annual income is $152,125 and the tax rate is 6% (or 0.06 in decimal form), we can perform the calculation:
\[ \text{Income Tax} = 152,125 \times 0.06 \]
Now, let's do the multiplication:
\[ 152,125 \times 0.06 = 9,127.50 \]
Therefore, the amount of income tax the doctor has to pay is $9,127.50.