Medicare Part D Irmaa 2025. In 2025, medicare part b premiums are increasing, along with part a deductibles. On november 8, 2024, the centers for medicare & medicaid services (cms) released the 2025 premiums, deductibles, and coinsurance amounts for the medicare part a and part b.
For part d, the surcharge ranges from $35.30 to $85.80 per month depending on your income level. Part d monthly premiums are dependent on the plan and set by the insurance provider or carrier.