Medicare Part D Plans 2024 California. Starting january 1, 2024, if you sign up for part a or part b during a special enrollment period because of an exceptional condition, you’ll have 2 months to join a. These plans help cover the costs of services provided by hospitals, doctors,.

Basic medicare part d plans with monthly premiums below the california average are referred to as benchmark plans. Part d (medicare drug coverage) helps cover cost of prescription drugs, may lower your costs and protect against higher costs.