The first year Chris was eligible for Medicare, I 'naively' signed her up for a Humana Advantage plan. All was well until she broke her leg while we were in Ohio and, subsequent to ER, needed Orthodpaedic help in Ohio and Wyoming. It was all paid out of pocket. I couldn't understand why our primary care physician in California kept saying he couldn't give her a referral.
The next year, I signed Chris up for a Humana Supplemental plan, and all has been well (no pun) since.