Is there an age requirement for receiving medicare coverage?

You must be 65 years of age or older to receive Medicare benefits. All the details of the program can be found at Medicare.gov and this site (ssa.gov/pubs/10043.html) has the medicare publication.

There is an age requirement to be at least 18 years of age to be a case head for medicare coverage but other than that any one of any age can receive medicare coverage if eligible.