Grand Junction · Stand-alone drug plan non-renewal for 2027

What Happens If My Part D Plan Is Discontinued for 2027?

You are disenrolled on January 1, 2027 with no drug coverage, and nothing replaces it unless you choose something. Your Part A, Part B and Medigap policy are not touched. You get a Special Enrollment Period from December 8, 2026 to February 28, 2027, but the calmer door is the one that is already open: Open Enrollment, October 15 through December 7, 2026.

Medicare On Main Data Desk

Published September 24, 2026 · 9 min read · Reviewed by Brian Penner, 22+ years in Medicare

This post is for a specific reader in Grand Junction: you have Original Medicare, probably a Medicare Supplement, and a stand-alone drug plan, and a letter has arrived saying the drug plan will not be offered in 2027. That is a different situation from a Medicare Advantage plan going away, which we covered in what to do when your Advantage plan is discontinued. When an Advantage plan ends, Medicare has a place to put you: Original Medicare. When a drug plan ends, it has nowhere to put you, so it puts you nowhere. The whole difference between an easy January and an expensive one is whether you understood that sentence in October.

First, which letter did you get?

Three different letters arrive in the same six weeks, and two of them look alike. The regulation behind the one that matters is 42 CFR § 423.507: a Part D sponsor that will not renew "must notify ... Each Medicare enrollee by mail at least 90 calendar days before the date on which the nonrenewal is effective," and must also either "Provide a CMS approved written description of alternative MA plan and PDP options" or "Place outbound calls to all affected enrollees." So a real non-renewal letter reaches you by early October and comes with a list or a phone call. Here is how to tell the three apart, and what happens under each if you do nothing.

Sources: 42 CFR § 423.507; CMS CY 2027 Enrollment and Disenrollment Guidance, § 30.6.10; Medicare.gov, Special Enrollment Periods.

The consolidation row is the trap for careful people. A company that is trimming its Colorado lineup may "crosswalk" your plan into one of its survivors, and CMS's guidance describes exactly that check: whether a plan is "truly non-renewing (i.e., all individuals will be disenrolled with no automated enrollment into another PDP), or whether individuals are actually being cross-walked to a different PDP." If you are being cross-walked, you will have a drug plan on January 1 whether you lift a finger or not. What you will not have is the Special Enrollment Period, because "plan consolidations are not terminations nor non-renewals." Your one window to say no to the new plan is Open Enrollment, and it closes December 7.

What actually happens on January 1 if you do nothing

The line to underline in CMS's guidance is short: "If an individual does not enroll in another PDP before the termination effective date, they will be disenrolled on the effective date of the termination." That is the entire mechanism. There is no fallback plan, no temporary coverage, and no bridge. On January 1 your pharmacy runs your card and gets a rejection, and every fill after that is at the pharmacy's cash price until you are enrolled somewhere.

Two things do not change, and it is worth saying so because people panic about them. Your Part A and Part B continue; a drug plan's contract has nothing to do with them. And your Medicare Supplement continues. Medicare.gov: "All standardized Medigap policies are automatically renewed every year, even if you have health problems." Medigap "plans sold after 2005 don't include prescription drug coverage," which is the same reason a Medigap policy cannot rescue you here: it never covered the drugs in the first place.

The one group Medicare does move is people with Extra Help. For "PDPs that are non-renewing," CMS reassigns "All current LIS enrollees who continue to have LIS in the following year" to another plan in late October. If you are reading this because you built a retirement that keeps you well clear of the Extra Help income limits, that reassignment is not for you, and nobody is coming. Which is fine, as long as you know it.

The calendar, with the start dates that matter

The Special Enrollment Period comes from 42 CFR § 423.38(c)(6), which covers a member whose "PDP sponsor's contract is terminated ... or the PDP plan is no longer offered in the area when the individual resides." Medicare.gov states the window as "Between December 8 and the last day in February of the following year." What Medicare.gov does not state, and CMS's guidance does, is when the coverage begins. The table is built from that guidance.

Sources: CMS CY 2027 Enrollment and Disenrollment Guidance, § 30.6.10.A; Medicare.gov, Open Enrollment; 42 CFR § 423.507. Gap days count from January 1, 2027.

Read the third column, not the first. The SEP's advertised length is nearly three months, but the only enrollments that arrive on time are the ones received by December 31, and those buy you nothing that Open Enrollment does not. CMS's own wording: "Enrollment requests received from December 8 through December 31 will have an effective date of January 1. Enrollment requests received in January will have an effective date of February 1. Enrollment requests received in February will have an effective date of March 1." Every day in the SEP after New Year's is a day you are paying cash at the counter. For a Mesa County household with the usual two or three maintenance drugs, that is an inconvenience; for one on a specialty drug, it is a four-figure month. We made a similar point about Advantage plans in can I change my Medicare Advantage plan after December 7; for drug plans the stakes are simpler and the gap is more literal.

The penalty question, answered with the regulation

People with money tend to worry about the penalty more than about the coverage, so here is the rule exactly. 42 CFR § 423.46 imposes the late enrollment penalty when "there is a continuous period of 63 days or longer at any time after the end of the individual's initial enrollment period" during which you had no creditable coverage and were not enrolled in Part D. Medicare's own publication gives the formula: "1% × national base beneficiary premium × number of full months without Part D or creditable coverage," "rounded to the nearest $0.10 and added to your monthly Part D premium."

Applied to this calendar: a January 1 start is a zero-day gap. A March 1 start, the latest the SEP allows, is a 59-day gap, four days inside the line, so no penalty. Miss February 28 and the arithmetic turns. Your next enrollment window is Open Enrollment in the fall of 2027 for a January 1, 2028 start, which is twelve uncovered months and a 12% penalty on whatever the base beneficiary premium is that year. CMS has set the 2027 base at $41.33; 12% of that is roughly $5 a month, recalculated annually, for as long as you have drug coverage. The dollar figure is small. The twelve months of paying cash for your prescriptions in 2027 are not.

One more thing the regulation makes clear: the penalty is about creditable coverage, not about your old plan. If you have creditable drug coverage from another source, an employer or retiree plan or VA coverage, the clock does not run. Most people reading this do not; that is why they had a stand-alone plan.

Choosing the replacement: five checks, in order

The 2027 plans become visible on Medicare Plan Finder on October 1. Until then, the honest answer to "which plan should I pick" is "the one that covers your drugs at your pharmacy for the least total cost," and the honest way to find it is the five checks below, run on the 2027 data rather than on a headline. We walked through the formulary mechanics in more depth in how do I check if a 2027 plan covers my drugs.

Sources: Medicare.gov, How much does Medicare drug coverage cost? (2027 deductible cap and out-of-pocket cap); Medicare Plan Finder.

Two 2027 figures are already final and belong in the comparison as background, not as deciding factors. Medicare.gov: "No Medicare drug plan may have a deductible more than $700 in 2027," and after the deductible you pay 25% "until your out-of-pocket spending on covered Part D drugs reaches ... $2,400 in 2027." Every plan you look at operates inside those two numbers. Premiums, on the other hand, are moving for 2027 because CMS is ending the temporary stabilization program that held stand-alone premiums down; we explained that in Part D premiums are changing for 2027. The practical effect for someone replacing a discontinued plan is that last year's lowest-premium plan may not be this year's, and the plan that replaced yours in the company's lineup is not automatically the one to buy.

Why a drug plan leaves all of Colorado at once

A Medicare Advantage plan can drop Mesa County and keep Denver, which is why Western Slope readers have learned to ask "is it leaving my county?" A stand-alone drug plan cannot do that. Under 42 CFR § 423.112, a drug plan sponsor's service area "consists of one or more PDP regions," and on CMS's region map Colorado is a region by itself. So when a drug plan is discontinued for 2027, it is discontinued in Grand Junction, Delta, Montrose and Denver alike, and the replacement shelf you are choosing from is the same statewide shelf everyone else sees. That is mildly good news: the Western Slope is not a thin market for drug plans the way it can be for Advantage plans, and the list you see in Plan Finder on October 1 is the full Colorado list.

What is local is your pharmacy and your conditions. Mesa County's CDC PLACES figures put high blood pressure at 26.6% of adults and diabetes at 8.1% (2023), which in practice means most households here carry two or three maintenance prescriptions into any plan change. Those are the drugs to run first, because they are the ones filled every month, and a tier or pharmacy mismatch on them costs you twelve times.

What I would do

Read the letter this week and decide which of the three it is. If it is a crosswalk, look up the plan they are moving you to on October 1 and decide during Open Enrollment whether you want it; doing nothing is a choice, and it might be the right one. If it is a non-renewal, do not wait for December 8 just because a letter said you have until February. Run your drugs and pharmacy through the 2027 plans in October, enroll during Open Enrollment, and let January 1 arrive like any other day. Keep the letter. If a new plan ever questions your coverage history, the non-renewal notice is the proof that the gap, if there was one, was not yours to close.

How we know all this: the Medicare On Main Data Desk frames every article with public data — here, 42 CFR § 423.507 for the 90 calendar days notice and the alternatives-or-calls requirement; 42 CFR § 423.38(c)(6) for the Special Enrollment Period; CMS's CY 2027 Enrollment and Disenrollment Guidance (August 25, 2026) for the SEP dates, the effective-date rules, the "will be disenrolled" policy, the consolidation exclusion and LIS reassignment; 42 CFR § 423.46 and Medicare.gov publication 11222 for the 63-day rule and the penalty formula; Medicare.gov's Special Enrollment Periods, Open Enrollment and drug-coverage cost pages; CMS's July 28, 2026 Part D bid announcement for the $41.33 2027 base beneficiary premium; 42 CFR § 423.112 and CMS's PDP region map for service areas; Medicare.gov's Medigap page for renewal and drug coverage; and CDC PLACES county data (2023). No 2027 plan, carrier, premium or formulary is named; CMS publishes the 2027 landscape October 1. No carrier is criticized for a non-renewal; a discontinued plan is a fact of a contract year. This is education, not advice; confirm your own letter, options and dates with the plan, a licensed agent, or Medicare.gov. We take no payment from any carrier to feature a plan.