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Video: 11 New Medicare Advantage Plans in South Dakota for 2027: The List

The video version of our explainer for South Dakota: its main points, read aloud. The full article, with its sources, is linked below.

Published November 10, 2026 · 26 days left in Annual Enrollment (Oct. 15 to Dec. 7, 2026)

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By MyMedicarePlans Data Desk · Plan Landscape & Data✓ Verified Team
✓ Reviewed for the 2027 plan year·● South Dakota
2027 PLAN ALERT

Medicare Advantage plans in your area are changing or leaving for 2027.

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By the numbers

How South Dakota's 2027 changes compare

#39
of 51 states by plans leaving for 2027
37.0%
of South Dakota's 2026 plans are not returning
22.2%
of 2026 plans carry over with no change
11.0
new plans enter for every 10 leaving

Measured against its own 2026 lineup of Medicare Advantage plans, South Dakota is losing 37.0% of them, the 4th highest of the 48 states with 20 or more plans; nationally, counting each plan once, the figure is 20.6%. 22.2% of the state's 2026 plans continue into 2027 with no change in premium, drug deductible, plan type or name; the other 77.8% change or leave.

Plans are leaving in 66 of South Dakota's 66 counties — every county in the state.

South Dakota counts 72,636 people in Medicare Advantage, 0.2% of the national total.

Share of each state's 2026 Medicare Advantage plans leaving for 2027
Minnesota42.7%
North Dakota37.9%
Montana37.5%
South Dakota37.0%
New Mexico37.0%
Connecticut36.2%
District of Columbia35.0%
United States20.6%

The South Dakota counties losing the largest share of their plans

County2026 plansLeavingShare
Campbell County181583.3%
Corson County181583.3%
Walworth County181583.3%
Haakon County141178.6%
Jackson County141178.6%

69.2% of the rated Medicare Advantage plans offered in South Dakota for 2027 come from contracts rated 4 stars or higher, against 60.0% nationwide.

Stand-alone drug plans (for people on Original Medicare) in the Upper Midwest and Northern Plains (Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota, and Wyoming) Part D region, which includes South Dakota: 9 for 2027, down from 11 in 2026; 0 with a $0 monthly premium, as in 2026.

Sources: CMS MA Landscape Source Files, CY2026 and CY2027; CMS State/County MA Penetration; CMS 2027 Star Ratings; CMS Part D (PDP) Landscape Source Files, CY2026 and CY2027. Area-level counts; no plan is named or recommended.

Read the full article

11 New Medicare Advantage Plans in South Dakota for 2027: The List

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Program-level information only; no plan is recommended, no premium or benefit is quoted. Not connected with or endorsed by the U.S. government or the federal Medicare program.

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