When seniors begin to need Medicare, they have to realize that Medicare does not cover all their medical expenses, and they will be in need of an affordable health insurance supplement to Medicare, namely Medigap.  If you and your spouse both need Medigap, it must be purchased separately for each of you. Medigap is not used with other medical/health insurance plans, just Medicare.
 
The best time to purchase a Medigap policy is during your open enrollment period, which lasts for 6 months and begins on the first day of the month you are age 65 or older and enrolled in Medicare Part B.  Being a senior and on Medicare doesn’t mean there are no other options for you, affordable health insurance is available if you know where to look.

Quote Medigap will help you with the various Medigap plans, which would be fit your current/anticipated needs, and at a rate you can afford.