Pulmonary function testing has come into widespread use since the 1970s. This has been facilitated by several developments. Because of miniaturization and advances in computer technology, microprocessor devices have become portable and automated with fewer moving parts.
You will pay Part B premiums as long as you keep the card. Those who are not automatically enrolled in Part B can sign up during their initial Medicare enrollment period which begins three months before their 65th birthday and ends three months after the 65th birthday.
How to enroll in Medicare. You can enroll in Medicare Part A and/or Medicare Part B in the following ways: 1  Online at www.SocialSecurity.gov. 2  By calling Social Security at 1-800-772-1213 (TTY users 1-800-0778), Monday through Friday, from 7AM to 7PM. 3  In-person at your local Social Security office.