State Retiree Group Health

• Can I change my health insurance carrier when I continue coverage at retirement?
• If I do not continue group health coverage when I retire because I will have coverage through my spouse, can I apply for coverage later?
• If I become eligible for Medicare prior to the age of 65, will my insurance be terminated?
• If I am Medicare eligible when I retire, can I still continue to cover a spouse who is not yet Medicare eligible?