For 2024 The Part D Initial Deductible Is. In 2025, the initial coverage period ends after you have accumulated $2,000. As of 2024, part d enrollees are no longer required to pay 5% coinsurance after they reach catastrophic coverage.

However, cms allows medicare part d plans to offer a variation on the defined standard benefits (for example, a medicare part d plan can offer a $0 initial deductible instead of the standard. For 2025, under the standard benefit, part d enrollees will pay a deductible of $590 (up from $545 in 2024), and will then pay 25% of their drug costs in the initial coverage phase.