Medicare 2026

Livermore guide to Medicare Part B and Part D late fees — and how to sidestep them

Livermore, Calif. — If you are approaching 65 or helping a parent who is, one of the costliest mistakes in Medicare has nothing to do with picking the "wrong" plan. It is missing an enrollment window. Part B and Part D both carry late-enrollment penalties that can follow you for the rest of your life, and they are added to your monthly premium every month you have coverage.

Medicare 2026Livermore, CA

The good news: these penalties are avoidable once you know the rules. Here is how they work for people living in Livermore, which sits in Alameda County, and the simple steps that keep them from ever hitting your bill.

What is the Medicare Part B late-enrollment penalty?

The Part B late-enrollment penalty adds 10% to your monthly Part B premium for each full 12-month period you could have had Part B but did not sign up. In most cases, you pay that higher premium for as long as you have Part B.

For example, if you waited three full years after you were eligible and had no other qualifying coverage, your Part B premium would be 30% higher than the standard amount — every month, for life. The penalty is calculated by Medicare when you finally enroll and is added to the monthly bill from the Centers for Medicare & Medicaid Services (CMS).

Most people in Livermore become eligible for Part B around their 65th birthday. Your Initial Enrollment Period is a seven-month window: the three months before the month you turn 65, your birthday month, and the three months after.

What is the Part D late-enrollment penalty, and how is it calculated?

The Part D late-enrollment penalty applies if you go 63 or more days in a row without "creditable" prescription drug coverage after your Initial Enrollment Period ends. Creditable coverage means drug coverage that Medicare considers at least as good as a basic Part D plan — often from a current or former employer or union.

The penalty equals 1% of the "national base beneficiary premium" multiplied by the number of full months you went without creditable coverage. That amount is rounded to the nearest 10 cents and added to your Part D premium each month, for as long as you have Part D coverage. Medicare recalculates the dollar figure each year as the base premium changes.

So even if you do not take any prescriptions today, enrolling in a Part D plan — or keeping documented creditable coverage — protects you from a growing penalty later.

How can Livermore residents avoid these penalties in the first place?

The simplest way to avoid both penalties is to enroll during your Initial Enrollment Period around age 65. If you are still working and have job-based coverage, you may be able to delay Part B and Part D without penalty, but you need to confirm two things: that the coverage is from current employment (not retiree or COBRA coverage) and, for drugs, that it is considered creditable.

A few practical steps:

• Ask your employer or plan administrator for a written "creditable coverage" notice each year and keep it in a safe place.
• When your job-based coverage ends, use your Part B Special Enrollment Period — generally up to eight months after employment or group coverage ends — to sign up without penalty.
• For Part D, enroll within 63 days of losing creditable drug coverage.
• If you are already past 65 and uninsured, do not wait. Each additional month without coverage can grow your Part D penalty.

The General Enrollment Period for Part B runs January 1 to March 31 each year, with coverage starting the month after you enroll. It is a backup, not a substitute for your Initial Enrollment Period.

What enrollment dates should Livermore readers mark for 2027 coverage?

It is fall 2026, which means you are choosing coverage that takes effect January 1, 2027. The Annual Enrollment Period runs October 15 through December 7, 2026 — the time to join, switch, or drop a Medicare Advantage or Part D plan for next year.

If you are already in a Medicare Advantage plan, you also have the Medicare Advantage Open Enrollment Period from January 1 to March 31, 2027, to make a one-time switch to another Advantage plan or to return to Original Medicare.

Livermore is in Alameda County, where plan availability for 2027 is set at the county level by CMS. The number of Medicare Advantage and Part D plans offered can change year to year, so review your Annual Notice of Change letter from your current plan before the December 7 deadline.

What 2026 Part D figures should I know while planning for 2027?

Part D has changed significantly in recent years, and some 2026 numbers are useful context as you plan. For 2026, the Part D out-of-pocket cap is $2,100, and the maximum Part D deductible is $615. The old "donut hole" coverage gap was eliminated as of 2025, leaving three phases of drug coverage.

Medicare also offers the Medicare Prescription Payment Plan, an optional program that lets you spread your Part D out-of-pocket drug costs across monthly payments rather than paying them all at the pharmacy counter. It does not lower your total cost, but it can smooth out big bills.

Higher-income enrollees should also be aware of IRMAA — the Income-Related Monthly Adjustment Amount — which adds surcharges to Part B and Part D premiums. For 2026, IRMAA begins above $109,000 in income for a single filer. Official 2027 figures will be released by CMS; check medicare.gov when they are posted.