Answer:
The common requirements to qualify for Medicare are:
- US citizen or permanent resident for at least 5 years.
- Currently receiving social security benefits or qualified to receive them in the future
- Your spouse is employed by the government and he/she has paid Medicare payroll taxes.
Apparently "J"uan Perez complies with them since he is a US citizen and has been contributing to Medicare for more than 20 years. Therefore, he should be eligible for it and Medicare would become his primary healthcare insurer. After Juan is enrolled in Medicare, his employer will no longer be required to provide sponsored health coverage.