Total Cost Incurred from stress test is $2,750.
Deductible of $2,000 means he pays $2,000 off the $2,750 leaving the remaining balance to be paid at:
However, Bobby's Health Insurance policy is now liable for 80% of of this balance equaling:
So in all, insurance covers just $600 off $,2750.
Therefore, Bobby will have to pay:
Bobby would need to pay $2,150 out of his own pocket for the stress test.