What are the best Medicare Advantage plans in South Dakota?

South Dakota has 0 five-star rated Medicare Advantage plans out of 27 total plans - a narrower book (#45 of 49); county rows beat the state total. Average star 3.8.

How do Medicare Advantage star ratings work?

CMS rates Medicare Advantage plans on a 1-to-5 star scale based on quality measures including preventive care, chronic disease management, member satisfaction, and customer service. Plans with 4+ stars are considered high quality. In South Dakota, the average rating is 3.8 stars.

How much do Medicare Advantage plans cost in South Dakota?

Average monthly MA premium in South Dakota is $114.22 on a narrower book - sparse markets make county-level quotes decisive. Confirm on Medicare.gov.

How do I enroll in a Medicare Advantage plan in South Dakota?

You can enroll during the Annual Election Period (October 15 - December 7) for coverage starting January 1, or during the Medicare Advantage Open Enrollment Period (January 1 - March 31). Visit Medicare.gov, call 1-800-MEDICARE, or contact a licensed Medicare insurance agent in South Dakota. You must have Medicare Parts A and B to enroll.

What supplemental benefits do Medicare Advantage plans in South Dakota include?

Many Medicare Advantage plans in South Dakota include supplemental benefits not covered by Original Medicare, such as dental, vision, hearing, fitness programs, over-the-counter drug allowances, and transportation. Benefits vary by plan, check individual plan details for specific coverage.

Medicare Advantage · State · 2026 plan year

Medicare Advantage in South Dakota

Name: Medicare Advantage Plans - South Dakota
Creator: PlainMedicare
License: https://creativecommons.org/publicdomain/zero/1.0/

According to the Centers for Medicare & Medicaid Services (CMS) 2026 plan-year files, 27 plans across 66 counties; find your county to compare every plan available where you live.

Compiled by Plainmedicare · September 1, 2026

27
Plans available: 3.8★
Avg CMS rating: $114.22
Avg premium/mo: 0
5-star plans

The short answer

South Dakota ranks #45 of 49 by Medicare Advantage plan inventory (27 plans) but #27 by average CMS star (3.80★).

#45
inventory rank: 27
plans statewide: #27
avg star rank: 3.80★
mean CMS rating

Plan inventory and average star are independent CMS signals; a large catalog is not the same as the highest mean quality score.

Product mix · SD plans_unique

How 25 South Dakota plans split by CMS plan type

Local PPO 17 plans (68%) MSA 6 plans (24%) HMO 2 plans (8%)

Exclusive CMS plan-type codes for this state's representative plans_unique rows, orthogonal to the star-bucket chart below. Source: CMS landscape, 2026.

Narrower statewide MA inventory

South Dakota in the narrower-inventory third

South Dakota ranks #45 of 49 by plan count (27 plans) - bottom-third inventory; county Landscape rows matter more than state totals. According to CMS 2026 plan-year filings, South Dakota beneficiaries can choose from 27 distinct Medicare Advantage plans marketed across 66 counties - a bottom-third inventory book (#45 of 49); county listings beat the state total here. No plan in this state currently holds the top 5-star tier for the 2026 plan year. County (FIPS) service areas still decide what is sold where you live - open a county below before the October 15 - December 7 Annual Election Period closes.

plans #45/49 · stars #27/49 · 66 counties · avg prem $114.22/mo

Quality on a narrower MA book in South Dakota

South Dakota offers 27 Medicare Advantage plans across 66 counties. Mean star 3.8★ on a narrower inventory book (star rank #27/49); sparse markets make each county row more decisive. Confirm premiums and networks on <a class="underline" href="https://www.medicare.gov/plan-compare/" target="_blank" rel="external noopener">Medicare.gov Plan Compare</a>.

Where South Dakota sits on CMS quality

Average CMS star rating across the state's own Medicare Advantage plans, against every state and territory in the CMS file

3.8★ Top 53% higher than 47% of 49 states and territories

Each bar is a band; taller bars hold more states and territories. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Advantage Star Ratings 2026 · 2026-09-01

Counties in South Dakota

Click a county to see all Medicare Advantage plans available in your area.

Narrower markets: star ratings and county rows matter more than state totals.

Note: PlainMedicare provides publicly available CMS data for informational purposes only. This is not medical or insurance advice. Consult a licensed Medicare counselor or insurance agent before making enrollment decisions. Plan availability and premiums change annually, always verify with Medicare.gov or 1-800-MEDICARE.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from the Centers for Medicare & Medicaid Services (CMS). Retrieved and formatted by PlainMedicare

Using South Dakota's Medicare Advantage market

Plan availability and star ratings vary by county, not just by state.

South Dakota beneficiaries can choose from 27 distinct Medicare Advantage plans across 66 counties (#45 of 49 states by plan count) - look up your own county for what's actually sold there. Browse by county
The state's mean CMS star rating ranks #27 of 49 - see how star ratings are built before comparing plans. How star ratings work
Weigh total cost, not just premium: compare plan details using Medicare.gov before you enroll. Medicare Plan Compare

State-level figures average every county's filings; the plans actually sold where you live can differ from the state total.

PlainMedicare is rendered directly from CMS Medicare Advantage and Part D public files, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a correction. Data current as of 2026-09-01.

CMS lists 131,985 Medicare Advantage and Part D plan records in the current public files. PlainMedicare refreshes this registry with each annual release.