By Jose M Olivero, Social Security Public Affairs in Oklahoma City

If you have higher income, the law requires an upward adjustment to your monthly Medicare Part B (medical insurance) and Medicare prescription drug coverage premiums. But, if your income has gone down, you may use form SSA-44 to request a reduction in your Medicare income-related monthly adjustment amount.
Medicare Part B helps pay for your doctors’ services and outpatient care. It also covers other medical services, such as physical and occupational therapy, and some home health care. For most beneficiaries, the government pays a substantial portion — about 75 percent — of the Part B premium, and the beneficiary pays the remaining 25 percent.
If you’re a higher-income beneficiary, you’ll pay a larger percentage of the total cost of Medicare Part B, based on the income you report to the Internal Revenue Service (IRS). You’ll pay monthly Part B premiums equal to 35, 50, 65, 80, or 85 percent of the total cost, depending on the income you report to the IRS.
Medicare Part D prescription drug coverage helps pay for your prescription drugs. For most beneficiaries, the government pays a major portion of the total costs for this coverage, and the beneficiary pays the rest. Prescription drug plan costs vary depending on the plan, and whether you get Extra Help with your portion of the Medicare prescription drug coverage costs.
If you’re a higher-income beneficiary with Medicare prescription drug coverage, you’ll pay monthly premiums plus an additional amount, which is also based on the income you report to the IRS. Because individual plan premiums vary, the law specifies that the amount is determined using a base premium. Social Security ties the additional amount you pay to the base beneficiary premium, not your own premium amount. If you’re a higher-income beneficiary, we deduct this amount from your monthly Social Security payments regardless of how you usually pay your monthly prescription plan premiums. If the amount is greater than your monthly payment from Social Security, or you don’t get monthly payments, you’ll get a separate bill from another federal agency, such as the Centers for Medicare & Medicaid Services or the Railroad Retirement Board.
You can find Form SSA-44 online at www.socialsecurity.gov/forms/ssa-44.pdf. You can also read more in the publication “Medicare Premiums: Rules For Higher-Income Beneficiaries” at: www.socialsecurity.gov/pubs/EN-05-10536.pdf.