Assuming that Medicare would cover my annual physical and waiting a year since my last one, I was surprised to see that it wasn't covered, which set me back $279. The explanation, per the Explanation of Benefits, was ...
"This service was denied. Medicare doesn't cover an Annual Wellness Visit within the first 12 months of your Medicare Part B coverage. Medicare does cover a one-time Welcome to Medicare preventive visit within the first 12 months."
So I should have scheduled the "Welcome to Medicare" visit, not the "Annual Wellness" visit.
While Medicare overall is pretty good, there are a few "gotchas", and this one "gotcha'd me good".
More info at this AARP link.