Who Qualifies For Medigap? 
Anyone over the age of 65 and on Medicare can buy a Medigap plan . The best time to buy is when you 're new to Medicare as you 'll have a 6-month window -LRB- from your Medicare Part B effective date -RRB- to buy any Medigap plan you want with NO medical underwriting . Beyond this window , you 'll be subject to answering health questions to qualify for a new plan -LRB- every carriers ' questions are different -RRB- if you do n't have a guaranteed-issue right available to you . If you 're under 65 , you can still purchase a Medigap plan if you 're on Medicare for disability or ESRD , but the cost will be very high . Medigap plans are designed to be purchased by individuals age 65 and up . I hope the information is helpful - please feel free to contact me for assistance with your Medigap coverage and if you have any other questions . Thanks very much . 