Gregory County, South Dakota: health insurance
What Gregory County residents should know about Medicare, marketplace plans and Medicaid.
Gregory County at a glance
| State | South Dakota |
|---|---|
| Population (2023 est.) | 4,018 |
| Population rank in South Dakota | 40 of 66 |
| Land area | 1,015 square miles |
Source: U.S. Census Bureau (Population Estimates 2023; Gazetteer 2023).
Medicare plans leaving Gregory County for 2027
10 Medicare plans from 3 companies are listed in Gregory County for 2026 but not for 2027, covering at least 12 people enrolled in the plans below today.
- SilverScript Choice (PDP) (S5601-050, Aetna (CVS Health))
- HealthSpring Extra Rx (PDP) (S5617-375, Cigna HealthSpring (HCSC))
- HealthSpring Assurance Rx (PDP) (S5617-123, Cigna HealthSpring (HCSC))
| Plan going away | Company | People enrolled (at least) |
|---|---|---|
| Aetna Medicare Signature (PPO) H1608-120 | Aetna (CVS Health) | 12 |
| Aetna Medicare Dual (PPO D-SNP) H1608-062 | Aetna (CVS Health) | 10 or fewer |
| Aetna Medicare Eagle (PPO) H1608-061 | Aetna (CVS Health) | 10 or fewer |
| Aetna Medicare Enhanced Extra (PPO) H1608-119 | Aetna (CVS Health) | 10 or fewer |
| Aetna Medicare Full Dual (PPO D-SNP) H1608-121 | Aetna (CVS Health) | 10 or fewer |
| Medica Prime Solution Core w/Rx (Cost) H2450-035 | Medica Holding Company | 10 or fewer |
| Medica Prime Solution Premier w/Rx (Cost) H2450-037 | Medica Holding Company | 10 or fewer |
A plan can be listed because it was renumbered or replaced, not only because a company is leaving the county. When the same company keeps other plans there, members are usually moved to a replacement plan. Your plan should send you a notice, and Medicare’s Annual Enrollment Period (October 15 to December 7) is when you can compare and switch. “People enrolled” is the number enrolled in that plan today (CMS hides counts of 10 or fewer). Source: CMS Medicare Advantage and Part D landscape files for 2026 and 2027, and CMS enrollment data from September 2026.
Is your plan on this list? Call 855-367-1095 and we will look at what is available where you live, with no obligation to enroll.
Why your county matters for coverage
In South Dakota, the health plans you can choose depend on where you live. Medicare Advantage and Part D plans are offered by service area, usually county by county, and marketplace premiums and carriers are set by area as well. Living in Gregory County means the options on this page apply to you, and plans in a neighboring county may differ.
- Medicare: South Dakota SHIINE (Senior Health Information and Insurance Education) gives free, unbiased counseling at (800) 536-8197. Ask which plans serve Gregory County specifically.
- Marketplace plans: shop through HealthCare.gov (federal Marketplace); enter your Gregory County ZIP code to see what is offered.
- Medicaid: apply through South Dakota Department of Social Services (DSS).
South Dakota note: SHIINE organizes its volunteer counselors by region (western, southeastern, northeastern South Dakota), so a caller can be routed toward someone familiar with local providers and Medicare Advantage networks in their specific part of the state.
Questions about Gregory County
Are the same Medicare plans offered everywhere in South Dakota?
No. Plans are offered by service area. A plan available in one county may not be offered in Gregory County, so check by county.
Where do Gregory County residents get free Medicare counseling?
South Dakota SHIINE (Senior Health Information and Insurance Education) ((800) 536-8197) is South Dakota's free SHIP program.
Do I have to enroll if I call?
No. Calling is a conversation about your options, and you are never required to enroll.
Gregory County residents: call 855-367-1095
Call Lander LLC to go over your options. There is no cost to call or to speak with an agent, and you are never required to enroll in anything.
Call 855-367-1095Other large counties
Reviewed by Richard Lander, licensed insurance agent (NPN 21255551), Lander LLC. Last updated October 3, 2026. This page is educational and is not a quote, an offer of coverage, or legal or tax advice.