Plan A may be one of the few options available if you qualify for Medicare due to a disability. Unfortunately, though, premiums for Medicare Supplement Plan A for those under the age of 65 will typically be twice as high. And in some cases even three times as high, as it would be for someone 65 or older. This is because Medicare recipients under the age of 65 typically accrue greater medical expenses than Medicare enrollees of the same age.
You will also most likely not have the same Open Enrollment Period as people over 65. Only people who are eligible for Medicare because of a diagnosis of end-stage renal disease (ESRD) or amyotrophic lateral sclerosis (ALS) are granted a second Medicare Supplement Open Enrollment Period. And can sign up for Medicare Supplement Plan coverage without answering any health questions.