Apply online https://www.ssa.gov/medicare/sign-up
Apply by mail or fax Medicare Part B Form to your local Social Security office.
Part B (CMS-40B) Form https://www.cms.gov/medicare/cms-forms/cms-forms/downloads/cms40b-e.pdf
延迟注册处罚: Part B每年10%罚款& Part D每年12%罚款, 罚款是终生的; Avoid late enrollment penalties https://www.medicare.gov/basics/costs/medicare-costs/avoid-penalties
