Newsroom · Sioux Falls

What $0 Medicare Advantage Plans in Sioux Falls Really Cost You in 2026

The headline says $0 — but your Part B bill, your drug deductible, and IRMAA tell a different story.

Big Sioux Benefits Data Desk

Published June 27, 2026 · 9 min read · Sourced from CMS.gov / SSA.gov

Two of the eleven Medicare Advantage plans available in Sioux Falls for 2026 carry a $0 monthly premium — but "$0 premium" and "$0 cost" are two very different things. Before you choose a plan based on the headline number, it pays to see the full 2026 cost picture: what you owe regardless of plan choice, what the deductibles look like, and when IRMAA turns a "$0" plan into a $259-a-month commitment.

Every figure in this article comes directly from public federal data: the CMS PY2026 Medicare Advantage/Part D Landscape, the CMS 2026 Star Ratings, the CMS Part B premium fact sheet, and the SSA IRMAA schedule. No invented numbers — if a cost can't be sourced, it's cut.

What "$0 premium" actually means — and what it doesn't cover

When a Medicare Advantage plan advertises a $0 premium, it means the plan's own monthly charge is zero. That's a real saving — it eliminates the separate monthly bill that comes with higher-premium plans. But Medicare Advantage doesn't replace your federal Medicare enrollment; you stay enrolled in Medicare Parts A and B, and Part B carries its own monthly premium paid directly to the federal government.

That Part B premium continues regardless of which plan you join. In the most recently published CMS schedule, the standard Part B premium is $185.00 per month — $$2,220 a year. It doesn't show up on your plan's bill; it's deducted directly from your Social Security check (or billed separately if you're not yet drawing benefits). Enrolling in a $0-premium Medicare Advantage plan reduces that obligation by exactly $0.

The five Sioux Falls PPOs: $0 plans vs. the alternatives

Minnehaha County has five standard Medicare Advantage PPOs open to anyone with Medicare in 2026. Here's the full roster with premiums, drug deductibles, and the true monthly cost when you add the standard Part B premium:

Source: CMS Medicare Advantage / Part D Landscape (PY2026) & CMS Medicare Advantage & Part D Star Ratings (2026). Monthly w/ Part B = plan premium + $$185.00 standard Part B; IRMAA not included. Verify with a licensed agent or Medicare.gov.

All five plans sit at 3.5★ in the 2026 CMS ratings — so on the quality measure, they're even. The meaningful differences are in the drug deductible and the plan premium. Notice that Aetna Medicare Enhanced Extra charges a $52 monthly premium and the same $615 drug deductible as the $0 Aetna Signature — meaning you'd pay $624 more per year for the premium plan without a lower deductible. On the other hand, Blue Medicare and Align ChoiceElite cost more monthly but carry a lower $300 drug deductible.

IRMAA: the surcharge that makes a "$0 plan" cost more than you expect

IRMAA (Income-Related Monthly Adjustment Amount) is a surcharge the Social Security Administration adds to your Part B premium if your Modified Adjusted Gross Income from two years prior exceeds certain thresholds. It applies to everyone above the threshold — Medicare Advantage enrollees, Medigap enrollees, and Original Medicare beneficiaries alike. A $0-premium plan offers no protection from it.

Here's how your true monthly Medicare cost (Part B only, no plan premium) changes across income tiers for 2025 published amounts:

Source: CMS 2025 Medicare Parts A & B Premiums and Deductibles (Fact Sheet) & Social Security Administration — Medicare Premiums: Rules for Higher-Income Beneficiaries. Amounts reflect 2025 published CMS/SSA figures; 2026 amounts published separately. Verify at SSA.gov. IRMAA uses a 2-year income lookback; 2026 Medicare costs are based on 2024 MAGI.

At the Tier 1 IRMAA bracket, even a "$0 premium" plan carries a real cost of $259.00/month in federal Part B premiums alone — more than the combined monthly cost (plan + Part B) of the $52-premium plan for a standard-income beneficiary. For anyone approaching the income threshold, comparing the full true cost — not the plan premium in isolation — is the only way to accurately size up the options. For more on IRMAA, how to appeal it, and what it means for Part D, see our complete IRMAA guide.

The drug deductible: where "$0 cost" meets week one of the year

The Part D drug deductible is paid before your Medicare plan's cost-sharing kicks in — and it resets every January 1. It's invisible in the monthly premium comparison but very visible the first time you fill a prescription in the new year.

In practice: if you pick up a brand-name medication in early January on a plan with a $615 deductible, you pay retail-equivalent cost for that drug until you've met $615. On a $350-deductible plan, the threshold is lower — but it still hits before any plan cost-sharing begins. For someone who takes generics only, both deductibles may not matter much, since generic prices often fall well below either threshold. For someone on even one brand-name maintenance drug, the deductible exposure is real and worth comparing against the premium savings.

Here's a quick break-even framing: Align ChoicePlus ($0 premium, $350 deductible) vs. Align ChoiceElite ($66/month, $300 deductible). The ChoiceElite costs $792 more per year in plan premiums. The deductible advantage is $50. You'd need to hit your deductible repeatedly on high-cost drugs for the premium plan to break even — for most beneficiaries, the $0 plan wins on total cost. The comparison is different across carriers (Aetna vs. Sanford), where network matters as much as the math.

The 2026 Part D $2,100 cap: the real safety net on any plan

The single most important change in 2026 Medicare drug coverage is the first-ever hard out-of-pocket cap on Part D spending: $2,100 per year. Once you've paid $2,100 out of pocket on covered drugs in a calendar year — counting your deductible and your cost-sharing above the deductible — your Part D cost-sharing drops to $0 for the rest of the year. This applies to every drug-carrying plan in Minnehaha County, including both $0-premium PPOs.

The cap doesn't make the deductible disappear — you still pay it in full before reaching the cap. But it fundamentally changes the worst-case scenario for high medication users. For someone on expensive specialty medications, a $615 deductible followed by cost-sharing on the way to the $2,100 cap means a known annual ceiling on drug costs — never more. For someone on low-cost generics, the cap is irrelevant because they'll never approach it. The $2,100 cap shifts the smart comparison strategy toward the formulary tier of your specific medications, not the premium. For a full breakdown of how the cap works, see our Part D cap explainer.

Hospital network: the Sanford-vs-Avera question under a $0 plan

Every Medicare Advantage plan in Sioux Falls is a PPO, which means you can go out of network — but at a higher cost. The real-world question is which network your preferred hospital and doctors are in. Sioux Falls runs on two competing health systems, and which one your plan favors shapes your costs more than the premium does.

Source: CMS Hospital Compare — Overall Star Ratings.

Sanford USD Medical Center holds a 5-star CMS rating and Avera McKennan a strong 4-star. Both systems are highly rated — the network question isn't about quality, it's about which system your existing doctors and specialists are part of. Sanford operates its own Medicare plan (Align), so Align ChoicePlus is naturally optimized for Sanford-network care. If your primary care physician or cardiologist practices within the Avera system, an Align plan may mean higher out-of-pocket costs for those visits, even as a PPO that allows out-of-network access. Confirm your specific doctors' network status for 2026 before enrolling — that one step matters more than any premium comparison.

When chronic conditions change the cost calculus

The health profile of Minnehaha County adults — drawn from CDC PLACES 2023 data — illustrates why the deductible matters more for some beneficiaries than others:

Source: CDC PLACES: Local Data for Better Health, County 2023 (2023), Minnehaha County adults.

Nearly one in three Minnehaha County adults lives with high blood pressure (31.7%), and 10% carry a diabetes diagnosis. These are conditions that typically involve ongoing medications — often in multiple drug classes — plus regular specialist visits. For a beneficiary managing both hypertension and diabetes with three or four maintenance prescriptions, the plan's drug formulary and the deductible's impact on those specific medications is the most important comparison to make. A $0 plan with a $615 deductible that covers your medications at a favorable tier may still cost less than a $52-premium plan where your key drugs land on a higher tier. The only way to know is to run your exact drug list through each plan's formulary — which a licensed agent can help you do.

For a deeper look at how Minnehaha County's chronic-condition profile shapes plan selection, see our Medicare & Chronic Conditions guide.

Who is — and isn't — a strong fit for a $0 plan

The "$0 premium" framing makes these plans sound universally better. The reality is more nuanced:

Strong fit for a $0 plan: You're generally healthy, take only generics or a small number of lower-tier medications, your primary doctors are in the plan's preferred network (Sanford for Align; Aetna's contracted panel for Aetna Signature), and you want to minimize your fixed monthly costs. In this profile, the $0 plan often wins on total annual cost — the premium savings outweigh the deductible exposure.

Worth comparing more carefully if: You take one or more brand-name or specialty drugs that land on Tier 3–5 of the formulary; you're approaching the IRMAA income threshold and your Part B cost is rising; your primary physicians are predominantly in the Avera system (for Align plans) or outside Aetna's contracted panel (for Aetna Signature); or you prefer predictable low copays for frequent specialist visits over a lower monthly premium with higher per-visit costs. In these cases, comparing a low-premium plan or a Medigap supplement against your projected total spending — not just the monthly premium — is the essential step.

What to watch for the rest of 2026

1. Run your drug list through each plan's formulary — a $615 deductible matters far more if your medications are on Tier 3 than if they're all generic Tier 1.
2. Confirm your Part B premium with SSA — if your 2024 income may trigger IRMAA, your true monthly cost is higher than the plan comparison shows. Request a benefits verification letter from SSA.
3. Verify your doctors' 2026 network status — networks can change annually; an in-network physician in 2025 may not be in-network in 2026. Confirm before the January 1 effective date.
4. Watch the Annual Enrollment Period (Oct 15–Dec 7) — if you're in a $0 plan and find the deductible or out-of-pocket costs higher than expected, AEP is your annual opportunity to switch for the following year.
5. Track your Part D spending toward the $2,100 cap — your plan's Explanation of Benefits (EOB) shows your running out-of-pocket total; once you hit $2,100, your cost-sharing drops to zero for the rest of the calendar year.

How we know all this: Big Sioux Benefits runs every article through a data desk that cross-references the CMS plan landscape, 2026 star ratings, SSA/CMS premium schedules, and CDC local health data — built by Strategic AI Architects. Every figure here is from a public federal dataset. This is education, not advice; confirm your plan, costs, and eligibility with a licensed agent or Medicare.gov. We take no payment from any carrier to feature a plan. We do not offer every plan available in your area — any information we provide is limited to the plans we offer. Please contact Medicare.gov or 1‑800‑MEDICARE to get information on all of your options.