Medicare Part D in Sioux Falls, South Dakota: Your 2027 Prescription Coverage Guide

Drug coverage under Medicare got a major overhaul for 2027. This guide covers the $2,400 out-of-pocket cap, how the coverage phases work, and what people in Sioux Falls, South Dakota should know — no jargon, no sales pitch.

In Medicare, the line that matters isn't your city limit — it's your county. Sioux Falls sits in Minnehaha County (part of Sioux Falls area), and plan availability, networks, and costs are all set at that county level, so the figures on this page reflect Minnehaha County rather than Sioux Falls on its own.

21 Medicare Advantage plans are available for 2027. About 42% of the county's Medicare members are in a Medicare Advantage plan rather than Original Medicare, among the roughly 28,306 residents who are 65 or older. These are official area-level counts, not a ranking or an endorsement of any plan.

From here you'll find the companies active around Sioux Falls, how the parts of Medicare fit together, what coverage costs in 2027, when you can enroll, and where to get free help.

Part D, phase by phase

Part D is Medicare's prescription-drug coverage, and you can get it either on its own alongside Original Medicare or baked into a Medicare Advantage plan. The government sets the structure; private insurers run the plans.

Here's the shape of a 2027 plan: you first pay a deductible (capped at $700), then share costs during initial coverage, and finally hit a catastrophic phase where a new yearly out-of-pocket cap kicks in — the old coverage gap has been eliminated. If lumpy pharmacy bills are a worry, the Medicare Prescription Payment Plan can spread them monthly.

We explain how all of that plays out in Sioux Falls, South Dakota. Because each plan's drug list and pricing differ, the plan-specific details belong on Medicare's Plan Finder — we don't rank plans.

Medicare Part DSioux Falls, SD

What Medicare costs in 2027

It helps to separate the costs everyone shares from the costs that vary by plan. The program-level numbers here are set nationally — the same whether you're in a big city or a rural county.

Part B premium. Most people pay the standard Part B premium of $202.90 a month in 2026 (2026 amount; 2027 figure will be posted when CMS releases it). Part A is premium-free for most people who worked and paid Medicare taxes long enough.

Part D drug costs. In 2027, a Part D plan's yearly deductible can be no more than $700, and a $2,400 cap limits what you pay out of pocket for covered prescriptions across the year — a real change for anyone with high drug costs.

Higher earners pay more for Parts B and D through an income-related adjustment called IRMAA, which for 2026 starts above $109,000 in annual income for an individual and is based on your 2024 tax return. Most people fall below that line and pay the standard amounts. The 2027 brackets will be posted when CMS releases them.

Plan-specific costs. What an individual plan charges — its premium, deductible, copays, and what it covers — varies by plan and changes yearly. We don't publish those figures or rank plans; Medicare's Plan Finder shows the current details for your situation, and a licensed agent can walk you through them.

Your Medicare enrollment calendar

The dates that follow are set federally, so they don't change from state to state — only your personal timing does.

It starts with your Initial Enrollment Period — the 7-month window around your 65th birthday month — the window around turning 65 when you first sign up. Missing it can mean late penalties that stick around, so it's the one not to sleep on.

After that, the big recurring window is the Annual Enrollment Period, October 15 – December 7, when anyone can join, switch, or drop an Advantage or Part D plan for a January 1 start. And if you're already in an Advantage plan, the Medicare Advantage Open Enrollment (January 1 – March 31) gives you one more chance to change course.

Life events — a move, a loss of other coverage — can also trigger a Special Enrollment Period. The calendar below shows the whole year at a glance.

Where to get free, unbiased help near Sioux Falls

Good Medicare help exists and it's free — you don't have to figure this out solo or pay for guidance.

For official specifics and the Plan Finder tool, go straight to Medicare.gov or 1-800-MEDICARE (TTY 1-877-486-2048). And a licensed agent can compare options and handle the paperwork with you.

One note on who we are: MyMedicarePlans.org is an independent, privately owned educational resource — not Medicare, not a government agency, and not affiliated with one. Our job is to help you get oriented, then hand you off to the official sources and licensed professionals for plan decisions.

Latest Medicare Part D guides for Sioux Falls

More South Dakota Medicare Part D guides