Medicare Advantage

UnitedHealthcare Medicare Advantage in South Dakota for 2027: 3 Plans, County by County

SIOUX FALLS, S.D. — For plan year 2027, UnitedHealthcare is offering three Medicare Advantage plans across South Dakota, according to the Centers for Medicare & Medicaid Services (CMS) Medicare Advantage Landscape Source File. That total includes two Dual Eligible Special Needs Plans (D-SNPs) and one general PPO. Statewide, five carriers together list 28 Medicare Advantage plans for 2027, so UnitedHealthcare is one slice of a broader market South Dakotans will see when they open the Medicare Plan Finder this fall.

This explainer is published by an independent Medicare education site. We are privately owned, not part of the government, and not affiliated with UnitedHealthcare or any other insurance carrier. Everything below is drawn from the CMS Landscape files for 2027; nothing here is a recommendation.

What is UnitedHealthcare offering in South Dakota for 2027?

UnitedHealthcare is offering 3 Medicare Advantage plans in South Dakota for plan year 2027. All 3 are PPOs. Of those, 2 are Dual Eligible Special Needs Plans (D-SNPs), designed for people who qualify for both Medicare and Medicaid. There are no Chronic Condition SNPs (C-SNPs) and no Institutional SNPs (I-SNPs) from UnitedHealthcare in the state this year. Two of the three plans include Part D prescription drug coverage; one does not.

For context, CMS lists 4 other carriers offering Medicare Advantage in South Dakota for 2027, and the combined statewide total across all carriers is 28 plans. The full carrier-by-carrier and plan-by-plan lists appear in the tables on this page.

Which UnitedHealthcare plans reach the most South Dakota counties in 2027?

The two UnitedHealthcare D-SNPs have the widest county reach in South Dakota for 2027, each listed in 47 counties: UHC Dual Complete SD-Q1 (PPO D-SNP) and UHC Dual Complete SD-S2 (PPO D-SNP). Both include drug coverage and are limited to people who qualify for both Medicare and Medicaid.

The third plan, AARP Medicare Advantage Patriot No Rx SI-MA2 (PPO), is listed in 45 counties for 2027. It is a PPO without drug coverage, meaning anyone enrolled who wants Part D would need to consider that separately; the CMS Landscape file notes the lack of drug coverage but does not describe how any specific person should handle it.

County counts come straight from the CMS file. They tell you where a plan is listed — not what it costs, what it covers, or which providers are in network.

What is new or not returning from UnitedHealthcare in South Dakota for 2027?

For 2027, UnitedHealthcare has 0 new Medicare Advantage plans in South Dakota and 0 plans that are not returning from 2026. In other words, the UnitedHealthcare lineup you see for 2027 matches, at the plan-identifier level, what the carrier offered in 2026 in the state.

That stability applies only to whether a plan is on the shelf. Premiums, deductibles, copays, drug formularies, provider networks and extra benefits can still change year to year, which is why CMS and Medicare.gov encourage every enrollee to re-read the Annual Notice of Change (ANOC) their current plan mails each fall.

How do I check whether a UnitedHealthcare plan is offered in my South Dakota county for 2027?

Use the Medicare Plan Finder at medicare.gov and enter your ZIP code, or call 1-800-MEDICARE (TTY 1-877-486-2048), available 24 hours a day, 7 days a week. The statewide list on this page shows what UnitedHealthcare has filed with CMS for South Dakota in 2027; because Medicare Advantage is sold county by county, a plan listed statewide may not be offered where you live.

Once you confirm a plan is available in your county, three checks matter before you enroll:

1. Doctors and hospitals: look up each provider in the plan's own directory, or call the provider's office and ask whether they are contracted with that specific plan for 2027. 2. Prescriptions: enter every drug, dose and pharmacy into the Plan Finder to see the plan's formulary tier and any restrictions. 3. The plan documents: the Summary of Benefits and the Evidence of Coverage are the controlling descriptions of what a plan does and does not cover.

What should South Dakota Medicare beneficiaries do before December 7, 2026?

The Annual Enrollment Period for plan year 2027 runs October 15 – December 7, 2026, and any choice made during that window takes effect January 1, 2027. You can use the period to join a Medicare Advantage plan, switch plans, or move between Original Medicare and Medicare Advantage.

A simple checklist for Annual Enrollment 2027:

• Read the Annual Notice of Change from your current plan, if you have one.
• Make a list of your doctors, hospitals, pharmacies, and prescriptions.
• Compare plans in your county on the Medicare Plan Finder at medicare.gov.
• If you qualify for both Medicare and Medicaid, note that D-SNPs — including the two UnitedHealthcare D-SNPs listed in South Dakota for 2027 — have their own eligibility rules.
• Keep confirmation numbers for any enrollment you complete.

There is no need to rush. The date is the date; it is not a sales deadline.

Where can South Dakotans get free Medicare help for 2027?

Two no-cost, non-sales resources cover the whole state: Medicare.gov, which hosts the official Plan Finder and plan documents, and 1-800-MEDICARE (TTY 1-877-486-2048), staffed around the clock. Both are run by CMS, so the information is the same whether you compare online or by phone.

For questions about Medicare eligibility and enrollment timing tied to Social Security, the Social Security Administration can help at ssa.gov or 1-800-772-1213.