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Plans ending in South Dakota in 2027
In South Dakota, 420 Medicare Advantage plan listings from 2026 are not offered in 2027, and 36 more are probably being replaced by a plan with a new number. A listing is one plan in one county.
- Not offeredin 2027
- 420
- of 943plan listings
- Probably beingreplaced
- 36
- same name,new number
- People in plansending here
- ~12,000
- rounded,Sept. 2026
- People who maybe moved
- ~10,000
- same contract hasother plans here
Ending here: no plan is left under the same contract in the county; members need to pick a new plan, or they will have Original Medicare. May be moved: the same contract still has other plans in the county, and companies often move members into one of them automatically. CMS's plan crosswalk, expected in October, will say which. Everyone in these plans keeps Medicare.
Counties with the most people in plans not offered
- Minnehaha County: about 5,200 people (~2,000 in plans ending here, ~3,200 who may be moved)
- Pennington County: about 2,900 people (~1,600 in plans ending here, ~1,400 who may be moved)
- Lincoln County: about 1,800 people (~820 in plans ending here, ~930 who may be moved)
- Brookings County: about 1,600 people (~1,100 in plans ending here, ~440 who may be moved)
- Davison County: about 1,200 people (~920 in plans ending here, ~260 who may be moved)
By company
| Company | Not offered | Probably replaced | People in plans ending here | People who may be moved |
|---|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 94 | 0 | ~10,000 | 0 |
| CVS Health Corporation | 120 | 0 | ~640 | 0 |
| Medica Holding Company | 168 | 36 | ~540 | ~5,700 |
| Sanford Health | 38 | 0 | 0 | ~4,500 |
By county
| County | Plans in 2026 | Not offered | Probably replaced | People in plans ending here | People who may be moved |
|---|---|---|---|---|---|
| Aurora County | 18 | 9 | 0 | ~60 | 20 or fewer |
| Beadle County | 16 | 7 | 0 | ~150 | ~20 |
| Bennett County | 8 | 2 | 0 | 0 | 20 or fewer |
| Bon Homme County | 20 | 9 | 0 | ~110 | 20 or fewer |
| Brookings County | 18 | 5 | 2 | ~1,100 | ~440 |
| Brown County | 11 | 2 | 0 | 0 | ~60 |
| Brule County | 13 | 7 | 0 | ~30 | ~10 |
| Buffalo County | 13 | 7 | 0 | 50 or fewer | 20 or fewer |
| Butte County | 10 | 4 | 2 | ~320 | ~200 |
| Campbell County | 18 | 15 | 0 | ~90 | 0 |
| Charles Mix County | 20 | 9 | 0 | ~130 | 20 or fewer |
| Clark County | 16 | 10 | 2 | ~40 | ~160 |
| Clay County | 20 | 6 | 0 | ~120 | ~80 |
| Codington County | 9 | 1 | 2 | 0 | ~1,100 |
| Corson County | 18 | 15 | 0 | ~40 | 0 |
| Custer County | 12 | 4 | 2 | ~220 | ~200 |
| Davison County | 16 | 8 | 2 | ~920 | ~260 |
| Day County | 18 | 10 | 2 | ~50 | ~130 |
| Deuel County | 18 | 10 | 2 | ~110 | ~140 |
| Dewey County | 13 | 10 | 0 | ~20 | 0 |
| Douglas County | 22 | 11 | 0 | ~60 | 40 or fewer |
| Edmunds County | 10 | 4 | 0 | ~50 | 20 or fewer |
| Fall River County | 10 | 4 | 2 | ~150 | ~130 |
| Faulk County | 8 | 2 | 0 | 0 | 20 or fewer |
| Grant County | 8 | 2 | 0 | 0 | ~10 |
| Gregory County | 13 | 7 | 0 | ~10 | 20 or fewer |
| Haakon County | 14 | 11 | 0 | ~70 | 0 |
| Hamlin County | 12 | 6 | 2 | ~20 | ~190 |
| Hand County | 10 | 2 | 0 | 0 | 20 or fewer |
| Hanson County | 20 | 11 | 0 | ~100 | 40 or fewer |
| Harding County | 13 | 10 | 0 | ~30 | 0 |
| Hughes County | 10 | 2 | 0 | 0 | ~20 |
| Hutchinson County | 20 | 11 | 0 | ~110 | ~10 |
| Hyde County | 8 | 2 | 0 | 0 | 20 or fewer |
| Jackson County | 14 | 11 | 0 | ~60 | 0 |
| Jerauld County | 15 | 9 | 0 | ~10 | 20 or fewer |
| Jones County | 8 | 2 | 0 | 0 | 20 or fewer |
| Kingsbury County | 18 | 10 | 2 | ~160 | ~110 |
| Lake County | 20 | 6 | 0 | ~150 | ~70 |
| Lawrence County | 12 | 4 | 2 | ~740 | ~420 |
| Lincoln County | 22 | 6 | 0 | ~820 | ~930 |
| Lyman County | 8 | 2 | 0 | 0 | 20 or fewer |
| Marshall County | 16 | 10 | 2 | ~30 | ~80 |
| McCook County | 22 | 6 | 0 | ~90 | ~60 |
| McPherson County | 10 | 4 | 0 | ~10 | 20 or fewer |
| Meade County | 12 | 4 | 2 | ~440 | ~360 |
| Mellette County | 8 | 2 | 0 | 0 | 20 or fewer |
| Miner County | 22 | 11 | 0 | ~70 | 40 or fewer |
| Minnehaha County | 22 | 6 | 0 | ~2,000 | ~3,200 |
| Moody County | 22 | 6 | 0 | ~90 | ~10 |
| Oglala Lakota County | 8 | 2 | 0 | 0 | 0 |
| Pennington County | 12 | 4 | 2 | ~1,600 | ~1,400 |
| Perkins County | 13 | 10 | 0 | ~170 | 0 |
| Potter County | 8 | 2 | 0 | 0 | 20 or fewer |
| Roberts County | 13 | 5 | 2 | ~130 | ~240 |
| Sanborn County | 16 | 10 | 2 | ~90 | ~30 |
| Spink County | 12 | 6 | 2 | ~40 | ~120 |
| Stanley County | 10 | 2 | 0 | 0 | 20 or fewer |
| Sully County | 8 | 2 | 0 | 0 | 20 or fewer |
| Todd County | 8 | 2 | 0 | 0 | 20 or fewer |
| Tripp County | 10 | 2 | 0 | 0 | 20 or fewer |
| Turner County | 22 | 6 | 0 | ~160 | ~90 |
| Union County | 20 | 4 | 0 | ~90 | 20 or fewer |
| Walworth County | 18 | 15 | 0 | ~270 | 0 |
| Yankton County | 18 | 4 | 0 | ~250 | ~20 |
| Ziebach County | 13 | 10 | 0 | 100 or fewer | 0 |
Drug plans (Part D) in South Dakota
Stand-alone drug plans are offered across the whole state. 3 are not offered in South Dakota in 2027.
| Plan | Company | What's happening | People in plan (Sept 2026) |
|---|---|---|---|
| SilverScript Choice (PDP) · S5601-050-0 | Aetna Medicare | Not offered: left this county | ~14,000 |
| HealthSpring Assurance Rx (PDP) · S5617-123-0 | HealthSpring | Not offered: company ending this contract | ~500 |
| HealthSpring Extra Rx (PDP) · S5617-375-0 | HealthSpring | Not offered: company ending this contract | ~1,100 |
These numbers come from CMS's plan files. If you're in one of these plans, confirm with your Annual Notice of Change or the letter from your plan.
Source: CMS CY2027 Landscape, data as of September 22, 2026 (release 202609.1). Enrollment: CMS Monthly Enrollment by Contract/Plan/State/County, September 2026. "Probably being replaced" is our own match by company and plan name; see how we get our numbers.