Best Health Insurance in South Dakota (2026)

Key Takeaways

Sanford Health Plan delivers the best HMO and PPO plans in South Dakota, balancing affordable rates with comprehensive coverage.

Wellmark has the best EPO plans in South Dakota, with $740 average monthly premiums for Silver-tier plans.

Compare multiple insurer quotes, examine coverage limits and deductibles, and verify your preferred doctors participate in the network before choosing a plan.

South Dakota's ACA marketplace has just two carriers for 2026: Sanford Health Plan and Wellmark. That's fewer options than most states, but it also means a clearer comparison. The state didn't expand Medicaid until 2023, which moved a portion of low-income enrollees into ACA plans and affected how both insurers priced their offerings. Sanford Health Plan is the right starting point for most South Dakota residents. Choose Wellmark only if you see specialists regularly and want to skip the referral step.

South Dakota's rural geography also matters for network access. HMO coverage through Sanford works well where the Sanford system has a strong footprint, but coverage can vary depending on where you live. When we reviewed every 2026 plan available in the state, the spread between the cheapest Silver-tier HMO and the cheapest Silver-tier EPO was $193 per month and $2,316 per year.

Best Health Insurance Companies in South Dakota

Sanford Health Plan is the best health insurance provider in South Dakota for HMO and PPO policies, with the most affordable rates in the state for these plan types.

Wellmark features lower maximum out-of-pocket (MOOP) limits and is best suited for shoppers who prefer EPO plans and more predictable cost sharing.


Sanford Health Plan	$547	$5,881	$2,748	4.5	HMO, PPO
Wellmark Of South Dakota, Inc.	$740	$5,325	$3,007	5	EPO

*Our picks reflect the best companies for 40-year-olds seeking Silver-tier plans. Rates vary by age and coverage level.

Sanford Health Plan

MoneyGeek Rating

4.5/ 5

4.2/5Affordability

5/5Deductible

5/5MOOP

Average Monthly Rate
$547
Average MOOP
$5,881
Average Deductible
$2,748

pros
- HMO and PPO plans across all metal tiers
- Gold HMO features low $1,406 deductible
cons
- PPO plans cost $175 to $230 more monthly than HMO equivalents
- High deductibles on Catastrophic plans at $10,600
Sanford Health Plan offers HMO and PPO plans across all metal levels from Catastrophic to Gold. HMO plans deliver stronger value at every tier.

In our review of Sanford's plan structure, the most useful finding: Gold HMO averages $574 per month against Silver HMO's $547, a $27 difference that cuts the deductible from $2,748 to $1,406. For enrollees who expect to use their coverage, that trade is worth taking.

PPO options add out-of-network access but cost $175 to $230 more per month than HMO equivalents. Silver PPO reaches $753 with the same $2,748 deductible as Silver HMO. Catastrophic PPO starts at $411.
Sanford's PPO costs $175 to $230 more per month than its HMO without meaningful additional benefits for most enrollees in the Sanford network. If your doctors are already in the Sanford system, the PPO's out-of-network access buys nothing.

The PPO earns its cost only if you see specialists outside the Sanford network regularly. Shoppers who want no-referral access at a lower monthly cost should compare Wellmark's EPO instead: at $740 per month, it's pricier than Sanford's HMO but cheaper than Sanford's Silver PPO at $753.
Sanford Health Plan South Dakota health insurance plans for 2026:
Data filtered by:
Plan Type
HMO
Metal Level
Catastrophic
Sanford Individual True $10,600 $294 HMO Catastrophic $10,600 $10,600 Yes


Sanford Individual True $10,600	$294	HMO	Catastrophic	$10,600	$10,600	Yes

Wellmark of South Dakota

MoneyGeek Rating

5/ 5

5/5Affordability

5/5Deductible

5/5MOOP

Average Monthly Rate
$740
Average MOOP
$5,325
Average Deductible
$3,007

pros
- EPO network offers middle ground between HMO and PPO flexibility
- Specialist visits allowed without referrals
- Gold features low $1,406 deductible at $720 monthly
- HSA-eligible Expanded Bronze option at $537 monthly
cons
- Primary care must be in-network for EPO plans
- Silver costs more than Gold at $740 despite weaker benefits
Wellmark only provides EPO plans in South Dakota, offering a middle ground between HMO restrictions and PPO flexibility. Rates climb steadily from $537 for Expanded Bronze to $740 for Silver, with Gold priced at $720. Silver costs slightly more than Gold at $740 despite higher $3,007 deductibles, while Gold features minimal $1,406 deductibles.

Expanded Bronze balances budget and protection with HSA eligibility at $537 monthly. Wellmark's EPO structure allows specialist visits without referrals. Still, it requires in-network care. The most counterintuitive finding in Wellmark's pricing: Gold costs $20 less per month than Silver and has a deductible less than half as large. For most enrollees who don't qualify for Silver cost-sharing reductions, Silver is the wrong choice.
Wellmark's Silver plan costs $740 per month with a $3,007 deductible, while its Gold plan costs $720 with a $1,406 deductible. Silver costs more and covers less. Buy Gold unless your income qualifies you for cost-sharing reductions tied to Silver plans through HealthCare.gov, in that case, the federal subsidy structure can make Silver the better deal.

If cost-sharing reductions don't apply to your situation, Gold is the right choice at Wellmark: $20 less per month, and the deductible is cut by more than half. And if the lowest possible monthly premium is your priority regardless of network type, Sanford's Silver HMO is $193 cheaper.

Wellmark South Dakota health insurance plans for 2026:

Data filtered by:


Wellmark Bronze Traditional Epo	$520	EPO	Expanded Bronze	$7,425	$5,400	Yes
Wellmark Bronze Hdhp Epo Hsa Qualified	$531	EPO	Expanded Bronze	$6,225	$6,225	Yes
Wellmark Standard Bronze Epo	$558	EPO	Expanded Bronze	$7,500	$5,625	Yes

Which Is the Best Health Insurance in South Dakota by Age and Plan Type?

Based on age and network preference, some providers in South Dakota offer better plan structures and coverage access than others, as detailed below.

By Age:

Teens (18): Sanford Health Plan HMO ($391), Wellmark EPO ($529)
Young adults (26): Sanford Health Plan HMO ($438), Wellmark EPO ($593)
Adults (40): Sanford Health Plan HMO ($547), Wellmark EPO ($740)
Seniors (60): Sanford Health Plan HMO ($1,162), Wellmark EPO ($1,571)

Sanford Health Plan's HMO leads on affordability at every age. A 18-year-old pays $391 per month for Sanford HMO versus $529 for Wellmark EPO, a $138 gap. By age 60, that gap reaches $409 per month or $4,908 per year.

That $4,908 annual difference carries real weight for adults approaching Medicare eligibility. Anyone turning 65 should plan to move to Medicare rather than renewing an ACA plan, where age-rated premiums peak sharply. At 26, aging off a parent's plan, Sanford's $438 HMO is $155 less per month than Wellmark's $593 EPO.

By Network Type (40-year-olds):

HMO: Sanford Health Plan offers the best HMO policies at $547 per month
PPO: Sanford Health Plan provides coverage at $753 monthly
EPO: Wellmark delivers Silver-tier plans at $740 monthly

The $206 monthly gap between Sanford's HMO and PPO is the most telling number in this table. Both come from the same carrier with largely the same network. That gap is the price of out-of-network access, most Sanford enrollees won't use.

Compare Health Insurance Companies in South Dakota

Health insurance costs in South Dakota change based on your age, metal tier and provider choice.

Data filtered by:


Avera Health Plans	$545	HMO	Silver	$5,998	$3,021	40	No
Sanford Health Plan	$547	HMO	Silver	$5,881	$2,748	40	No

*Some providers offer multiple plans of the same type and tier. Rates are based on company averages across all available plans for the given age, plan type and metal tier.

Sanford's PPO costs $206 more per month than its HMO for the same Silver coverage level. For most enrollees in the Sanford network, that premium buys out-of-network access they won't use. HMO is the stronger value unless you see specialists outside the Sanford system regularly.

The $193 monthly gap between Sanford's Silver HMO and Wellmark's Silver EPO is the largest pricing gap on this page, $2,316 per year. Avera Health Plans also appears in this table at $545 for Silver HMO, $2 less than Sanford. Avera isn't among our top picks because its availability across South Dakota counties is more limited than Sanford's. Verify Avera's network in your county before treating it as a like-for-like alternative.

How to Find the Best Health Insurance in South Dakota

Finding the right health insurance in South Dakota involves comparing your coverage needs, checking insurer reputations and exploring available enrollment options.

Decide on your coverage needs before buying

Compare monthly premiums against out-of-pocket limits based on how often you use health care. If you visit doctors frequently, plans with higher monthly costs but lower out-of-pocket maximums often result in long-term savings. At Sanford, Gold HMO costs $27 more per month than Silver but cuts the deductible by $1,342.

For those who rarely need care, lower-premium plans with higher deductibles may be more suitable. Review HMO, PPO and EPO plan types to understand network flexibility and referral requirements.

Compare company offerings and reputations

Research what plans insurers offer in your area and compare coverage terms, provider networks and benefits. Check company reputations through J.D. Power ratings and state complaint databases to verify claims handling and customer service quality before making your decision. South Dakota has only two marketplace carriers, which makes the comparison more direct than in most states.

Shop around

South Dakota rates vary based on age, plan type and coverage level. Open Enrollment runs from November 1 to January 15. Special Enrollment applies after qualifying life events like job loss, marriage, divorce or having a child. The gap between the two carriers is $193 per month, getting the right plan saves $2,316 per year. Compare plans from different insurers.

Take advantage of federal programs and subsidies

Depending on your income, you may qualify for federal subsidies or reduced-cost plans through HealthCare.gov. South Dakota expanded Medicaid in 2023, so check HealthCare.gov to see whether you qualify before buying a marketplace plan. Some South Dakota residents may be eligible for $0 premium plans based on income and family size.

Those 65 and older can review Medicare Supplement and Medicare Advantage plans for additional coverage options.

Average Health Insurance Cost in South Dakota

HMO plans are the most affordable health insurance plans in South Dakota, with Silver coverage averaging $546 monthly. EPO plans cost $740 for Silver-tier coverage in the state, while PPO plans are the most expensive, averaging $765 monthly for Silver-tier coverage.


HMO	$546	$597
EPO	$740	$720
PPO	$765	$805

*Average monthly premiums for 40-year-olds in South Dakota by plan type. Rates vary by age and location.

Best Health Insurance in South Dakota: Bottom Line

Sanford Health Plan's Silver HMO is the right starting point for most South Dakota residents. At $547 per month with a $2,748 deductible, it's the most affordable Silver plan in the state from a carrier with a network that covers most of the state.

In my analysis, the only clear reason to choose Wellmark over Sanford is the EPO's no-referral structure. If you see specialists regularly and don't want the extra step of a referral, Wellmark's $740 EPO is worth the $193 monthly difference.

Wellmark enrollees should buy Gold instead of Silver unless their income qualifies for cost-sharing reductions: Gold costs $720, $20 less per month than Silver and cuts the deductible from $3,007 to $1,406, saving $1,601 on your first major claim.

Best South Dakota Health Insurance: FAQ

Answers about the best health insurance in South Dakota:

Is health insurance required in South Dakota?

South Dakota does not require residents to have health insurance at the state level. Residents don't pay penalties for being uninsured. People may still qualify for federal subsidies through the health insurance marketplace to make coverage more affordable.

When is open enrollment in South Dakota?

South Dakota's open enrollment period for 2026 health coverage begins November 1, 2025, and ends January 31, 2026. You must select your plan by December 31, 2025, to have coverage start January 1, 2026.

Can you get free health insurance in South Dakota?

Yes, South Dakota residents can access free health insurance through Medicaid if they meet income requirements. Others qualify for premium subsidies through the federal marketplace that reduce monthly costs or eliminate them entirely.

What is the cheapest health insurance in South Dakota?

Sanford Health Plan offers South Dakota's cheapest health insurance at $547 monthly for HMO coverage. Gold plans cut deductibles to $1,406. Wellmark EPO plans cost $740 monthly and skip specialist referrals. Compare all insurers to find your lowest price.

How We Chose the Best Health Insurance in South Dakota

Our ranking system evaluates health insurance plans based on three cost factors: monthly premiums, maximum out-of-pocket limits and deductibles.

Scoring breakdown:

Monthly premium (60%): Plans with the cheapest average monthly costs earn the highest ratings.
Maximum out-of-pocket (MOOP) score (20%): MOOP is the most you'll pay for covered services in a year, not including premiums. Insurers with lower MOOP limits receive better scores.
Deductible (20%): This is the amount you pay for covered services before your plan starts paying. Plans with smaller deductibles score higher.

We standardized all scores within each filter group. For Silver-tier HMO options, the best-performing plan earns a 5 out of 5 rating, with other plans scored relative to this top performer.

MoneyGeek examined every 2026 health plan offered in South Dakota for people ages 18, 26, 40, 50 and 60. Premium costs shown reflect 40-year-old rates unless stated otherwise. Our analysis covers Catastrophic, Bronze, Expanded Bronze, Silver, Gold and Platinum coverage levels.

About Mark Fitzpatrick

Mark Fitzpatrick, a Licensed Property and Casualty (P&C) Insurance Producer in Connecticut, is MoneyGeek's resident insurance expert. He has spent nearly a decade analyzing the market, first at LendingTree and now at MoneyGeek, where he has produced original research on hundreds of carriers and millions of rates across auto, home, renters, health and life insurance.

He writes about economics and insurance on MoneyGeek so people can make coverage decisions with confidence. His insurance insights have been featured in The Washington Post, The New York Times and NPR, among other media outlets.

Like all MoneyGeek analysts, he draws on independent cost and consumer experience data, and no insurance company partnership influences his recommendations.

Fitzpatrick earned his degrees from Johns Hopkins University (M.A. Economics and International Relations) and Boston College (B.A.) and began his career in financial risk management at State Street. He's also a five-time Jeopardy champion!

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