Medicare Part D

Before you refill in January: how Livermore readers can decode a Part D Annual Notice of Change

LIVERMORE, Calif. — Fall 2026. The envelopes are landing in Livermore mailboxes right now. If you have a Medicare Part D drug plan or a Medicare Advantage plan with drug coverage, your insurer is required to send an Annual Notice of Change (ANOC) each fall that spells out what will be different starting January 1, 2027. The ANOC is the single most important piece of mail a Part D enrollee gets all year — and it is easy to set aside unread.

Medicare Part DLivermore, CA

This guide walks through what actually changes from one plan year to the next, how to read the ANOC without a highlighter and a headache, and what to do if the drug you take every morning is suddenly on a different tier — or requires paperwork it did not require before.

What is the Annual Notice of Change, and when does it arrive in Livermore?

The ANOC is a plain-language document your Part D or Medicare Advantage plan must mail (or deliver electronically, if you chose that) by late September each year. For the 2027 plan year, you should have it in hand well before the Annual Enrollment Period closes on December 7, 2026.

It is organized as a comparison: this is what your plan did in 2026, this is what it will do in 2027. The ANOC is paired with the Evidence of Coverage (EOC), which is the longer, legal version. Most readers only need the ANOC to spot changes that affect them.

How can a Part D drug list change from 2026 to 2027?

Plans can change their formularies in several ways each year, and all of them matter even if the drug is still "covered."

• Tier changes. Every covered drug sits on a tier, and tier generally drives what you pay. A drug can move from a lower tier to a higher one, which usually means a higher cost share, or occasionally move down.
• Prior authorization (PA). The plan may now require your prescriber to submit paperwork justifying the drug before it will be filled.
• Quantity limits (QL). The plan may cap how many pills, inhalers or doses you can get in a given period.
• Step therapy (ST). The plan may require you to try a preferred (often cheaper) drug first, and only cover the originally prescribed one if the first does not work.
• Removals and additions. Drugs can be dropped from the formulary entirely, and new ones (often newly approved generics or biosimilars) can be added.

CMS allows these changes year to year under Part D program rules, which is exactly why the ANOC exists.

What should I look for when I read my 2027 ANOC in Livermore?

Open the ANOC with your current medication list next to you. Walk through it in this order:

1. The premium, deductible and the drug cost-sharing tables. Compare the 2026 column to the 2027 column. 2. The formulary section. Look up each drug you take. Note the tier for 2027 and any letters next to it (PA, QL, ST, NDS for non-preferred, LA for limited access). 3. The pharmacy network. Preferred pharmacies can change, and your cost can be different at a preferred versus a standard in-network pharmacy. 4. Any plan-level changes. If a Medicare Advantage plan is being discontinued in Alameda County, that is disclosed here too.

If anything you depend on is changing, you have time — but not unlimited time — to act.

What are my options if my drug moves to a higher tier or adds prior authorization in 2027?

You generally have a few paths, and nothing requires you to pick one today.

• Stay in the plan and work with your prescriber. Your doctor can submit the prior authorization, request an exception to a tier or step therapy requirement, or switch you to a therapeutically similar drug that stays on a lower tier.
• Shop other Part D or Medicare Advantage plans during AEP. The Annual Enrollment Period runs October 15 through December 7, 2026. Livermore is in Alameda County, and plan availability is set at the county level. The Medicare Plan Finder at medicare.gov lets you enter your drug list and ZIP code to compare plans available in your county.
• Use the transition fill. New enrollees — and continuing enrollees whose drugs are affected by formulary changes — are generally entitled to a one-time transition supply (typically a 30-day fill) at the start of the plan year, which buys time to get an exception or change drugs.
• Consider the Medicare Prescription Payment Plan. This optional program lets you spread your out-of-pocket drug costs across the year in monthly installments instead of paying at the pharmacy counter. It does not lower what you owe; it smooths when you pay it.

What stays the same at the Part D program level in 2026?

Some big program-wide changes are not plan-specific — they apply to all Part D coverage.

• The out-of-pocket cap is $2,100 in 2026. Once your true out-of-pocket drug spending hits that amount, you pay $0 for covered Part D drugs the rest of the calendar year.
• The maximum Part D deductible is $615 in 2026. Plans can charge less, but not more.
• The coverage gap ("donut hole") was eliminated in 2025. Part D now has three phases: deductible, initial coverage, and catastrophic.
• IRMAA (the income-related monthly surcharge) begins above $109,000 in income for a single filer in 2026.
• The Medicare Advantage Open Enrollment Period runs January 1 – March 31, 2027, and lets Medicare Advantage enrollees make one switch after AEP closes.

CMS will publish the 2027 Part D figures ahead of the plan year; check medicare.gov for the updated numbers.