That only works if you anticipate regular medical needs that will 'save' you money by tapping into insurance.

Otherwise if you never anticipate hitting your deductible for the year, it makes more sense to pay a discounted cash rate out of pocket, and maintain the insurance only for a catastrophe situation where you far exceed your annual deductible: preventing yourself being stuck with a $100k hospital bill.

As far as I am aware, most deductibles are per-incident. If you have a $5k (figure pulled from arse) deductible and paid $1200 last month, $2300 last week and have a bill for $2000 today on three visits for three separate things (with three separate bills), you still owe $2000 because that bill is under the deductible.