Medicare Part D
Rock Springs: Medicare Advantage Jan–Mar 2027
ROCK SPRINGS, Wyo. — If you signed up for a Medicare Advantage plan during fall enrollment and are already second-guessing the fit, you have another window. The Medicare Advantage Open Enrollment Period runs January 1 through March 31, 2027, and it gives people already enrolled in a Medicare Advantage plan a one-time chance to make a change.
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Will your prescriptions still be covered in 2027?
Part D plans rewrite their drug lists every year — tiers move, pharmacies change, drugs drop off. One call checks your exact medications against the 2027 plans in your area.
- Every prescription checked, name by name
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Key takeaways
- The Medicare Advantage Open Enrollment Period runs January 1 through March 31, 2027, and lets people already in a Medicare Advantage plan make one change.
- In 2027, the Part D annual out-of-pocket cap on covered drug spending will be $2,400, which could change how a plan chosen in fall actually performs once used.
- Any change made during this window is a one-time switch, and it takes effect on the first day of the following month, so waiting until late March pushes the start date to May 1.
- This period is different from the Annual Enrollment Period that ended December 7, and it does not apply to people who are on Original Medicare, except in limited cases like Special Enrollment Periods.
That matters because 2027 brings some real shifts to how prescription costs work — including a Part D annual out-of-pocket cap of $2,400 on covered drug spending — and the plan you picked in October may look different once you actually start using it in January.
Here's what Rock Springs residents can (and can't) do during this window, and how to avoid the mistakes we see every year.
What the MA Open Enrollment Period actually is
The Medicare Advantage Open Enrollment Period (often shortened to MA-OEP) is a second-look window. It's not the same as the Annual Enrollment Period that ended December 7.
During January 1 – March 31, if you are already enrolled in a Medicare Advantage plan, you can:
- Switch to a different Medicare Advantage plan (with or without drug coverage).
- Drop your Medicare Advantage plan and return to Original Medicare (Parts A and B).
- If you go back to Original Medicare, join a stand-alone Part D prescription drug plan.
You only get to use this window once. Whatever change you make takes effect the first day of the following month.
What you cannot do in this window
This is where people trip up. During the MA-OEP, you cannot:
- Switch from Original Medicare into a Medicare Advantage plan for the first time.
- Join a stand-alone Part D drug plan if you are staying on a Medicare Advantage plan.
- Make a second change after your first one — you get one bite at the apple.
If you're happy with what you have, you don't need to do anything. Your current plan continues.
Why 2027 is a year to double-check your coverage
A few program-level changes are worth understanding before you decide whether to switch:
- Part D out-of-pocket cap of $2,400 in 2027. Once your out-of-pocket spending on covered drugs hits that amount, you pay nothing for covered drugs the rest of the year. (The 2026 cap is $2,100.)
- Part D deductible capped at $700 in 2027. Plans can charge less, but not more.
- The old "donut hole" coverage gap is gone. Part D now has three phases: deductible, initial coverage, and catastrophic.
- Medicare Prescription Payment Plan. This is an optional program that lets you spread your drug costs across the calendar year in monthly payments instead of paying big amounts at the pharmacy counter. You have to opt in — it's not automatic.
- IRMAA (income-related surcharges) kick in above $109,000 in income for a single filer in 2026, based on your 2024 tax return.
None of this changes the enrollment windows, but it changes the math on which plan design fits your life.
Plan availability in Sweetwater County
Rock Springs is in Sweetwater County, and Medicare plan availability is set at the county level — not by city or ZIP. That means every Rock Springs resident sees the same menu of Medicare Advantage and Part D plans as their neighbors across the county.
To see the exact number of Medicare Advantage plans and stand-alone Part D plans available in Sweetwater County for 2027, use the Plan Finder at medicare.gov and enter your ZIP code. The tool will show you plans available where you live, along with each plan's Star Rating — a 1-to-5 quality score CMS publishes each year based on member experience, customer service, and clinical measures.
Common mistakes to avoid
Waiting until the last week of March. Changes take effect the first day of the following month. If you switch March 30, your new plan starts May 1 — not April.
Assuming your doctors are still in-network. Provider networks can change from year to year. Before you switch to a new Medicare Advantage plan, call the plan and confirm your primary care doctor, specialists, and preferred hospital are in-network.
Overlooking the drug formulary. A plan that covered your medications in 2026 may cover them differently in 2027, or drop them entirely. Check the formulary for each drug you take.
Confusing MA-OEP with AEP. If you're on Original Medicare on January 1, this window is not for you — with limited exceptions like Special Enrollment Periods.
Trying to make more than one change. The rule is one switch. Choose carefully.
By the numbers
Medicare Part B premium, 2006–2026
The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.
Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.
By the numbers
How people get Medicare in Sweetwater County
(MA penetration in Sweetwater County)
MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.
Key dates
Medicare enrollment periods at a glance
- Around your 65thInitial Enrollment PeriodA 7-month window around the month you turn 65 — your first chance to sign up.
- October 15 – December 7Annual Enrollment PeriodAnyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan.
- January 1 – March 31Medicare Advantage Open EnrollmentIf you're already in a Medicare Advantage plan, you can make one change.
- January 1 – March 31General Enrollment PeriodFor people who missed their first chance to sign up for Part B.
- VariesSpecial Enrollment PeriodTriggered by life events like moving or losing other coverage.
Dates are set by Medicare and apply nationwide. Confirm your personal windows at Medicare.gov or 1-800-MEDICARE.
Try it
How the 2026 Part D drug cap works
Slide to your estimated yearly prescription costs and see how the new $2,100 out-of-pocket cap protects you. This illustrates the standard Part D benefit; your plan may structure costs differently.
Once your out-of-pocket spending on covered drugs reaches $2,100, you pay nothing more for the rest of 2026. Confirm details at Medicare.gov.
Explore
When can you enroll? An interactive year
Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.
Good to know
Frequently asked questions
Q: I have Original Medicare and a Medigap plan. Can I use this window to join a Medicare Advantage plan?
Q: If I drop my Medicare Advantage plan and go back to Original Medicare, can I get a Medigap policy?
Q: Does the new $2,400 Part D cap apply to all my prescriptions?
- CMS — Medicare Part D program rules (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.