- Those who are eligible for Medicare Part A
- Those who are enrolled in Medicare Part B
Enrollment in Medicare Part D is optional except for the following groups who are automatically enrolled in Part D:
- Those who receive Medicaid benefits
- Those who live in California and receive Medi-Cal benefits
Need Help Finding a Medicare Plan?
For help finding a Medicare plan or Medicare Prescription Drug plan, try our Medicare Plan Finder. If you have any questions, please contact Medicare at any time at 1-800-MEDICARE (1-800-633-4227; TTY users 1-877-486-2048).