Annual exams were included in the ACA but as I understand it there is no evidence to show that they improve health outcomes. I had one once in 15 years when it was incentivised by my employer (presumably trying to show that we were low risk to reduce the rates they paid?) but otherwise my doctor has never tried to book me for one.
I think I'd prefer the UK system where if you worry something is wrong you can see a doctor free of charge.