Do we have to deal with Medicare again? Wife on it for Disability, recently turned 65, but has always had my group medical insurance as Primary.

All the Medicare Advantage, etc., mail we're constantly getting now that she turned 65 has us nervous that we may need to do something even though she's already on Medicare.

Me: mid career, group health insurance (UHC), 10-20 years from retirement (big age difference). Her: disabled by an accident at 44, receiving disability and medicare ever since, recently turned 65. Severity of medical needs has reduced lately, but still exists.

We have always had to remind doctor offices "no, her Medicare is secondary and is due to disability, my group insurance is primary."

I'm assuming that we have to do nothing since she's already enrolled. I'm also assuming at worst Medicare automatically has become primary with UHC secondary for her.

Is it likely we have to do some paperwork with UHC or Medicare or both to keep things working properly? Is it likely that we actually have to do some open enrollment activity and maybe even select some additional program?