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2027 Medicare Advantage Plans in Williamson County, IL

Last update: .

For 2027, Williamson County, IL includes 5 Medicare Advantage plans. Enrollment across these plans totals approximately 405, with 4 $0 premium options and 0% rated 4 stars or higher.

At a Glance

  • Average Monthly Premium: $17.40/mo
  • $0 Premium Plans: 4
  • Average MOOP: $6,650 ($9,250 max. in 2027)
  • Star Ratings (Plan Mix): 4+ Stars: 0% · 3 Stars: 100% · Below 3: 0%
  • Average Part D Deductible: $700.00
  • Total MA/MAPD Enrollment: 405
  • Plans with the Highest Enrollment
    (as of October 5, 2026)
    1. Wellcare Simple Essential (HMO) — 163 enrollees
    2. Wellcare Giveback (HMO) — 108 enrollees
    3. HumanaChoice R5361-002 (REGIONAL PPO) — 79 enrollees

Totals on this page exclude Medicare Advantage Special Needs Plans (SNPs). SNP plans for Williamson County, IL are provided separately. Or you can discover all Medicare Options in Williamson County, IL. For a statewide view, browse Medicare Advantage plans in Illinois to examine available plan types, average premiums, out-of-pocket limits, CMS star ratings, and the most-enrolled plans across the state.

Medicare Advantage PPO Plans

Preferred Provider Organization (PPO) plans allow members to choose care from both in-network and out-of-network providers. Out-of-network care usually costs more, but PPOs offer greater flexibility in how members access care.

Total PPO Plans
2
Average Monthly Premium
$43.50/mo
Total PPO Enrollment
134
$0 Premium PPO Plans
1
Average MOOP
$7,225
Top PPO by Enrollment
HumanaChoice R5361-002 (Regional PPO) — 79 enrollees
PPO Plans Without Drug Coverage
1

2027 PPO Medicare Advantage plans in Williamson County, Illinois (comparison chart)
PPO Plan Name Rating* Premium MOOP Rx Ded. Plan-ID
Humana USAA Honor Giveback
☆☆☆☆☆
 $0 $6,750 N/A R5361-001-0
HumanaChoice R5361-002
☆☆☆☆☆
 $87 $7,700 $700 R5361-002-0

What is the typical premium for PPO plans available in Williamson?

PPO plans in Williamson cost $43.50 per month on average.

Which PPO plan do most beneficiaries choose in Williamson?

The most popular PPO plan in Williamson is HumanaChoice R5361-002 (Regional PPO), with 79 enrollees.

How many PPO options are offered without drug coverage in Williamson?

1 PPO plans in Williamson do not include prescription drug coverage.

Medicare Advantage HMO Plans

Health Maintenance Organization (HMO) plans generally require members to use in-network doctors, hospitals, and other providers, except in emergencies. Because of this structure, HMOs often have lower premiums and out-of-pocket costs than other plan types.

  • Total HMO Plans 2
  • Average Monthly Premium $0.00/mo
  • Total HMO Enrollment 271
  • $0 Premium HMO Plans 2
  • Average MOOP $6,650
  • Top HMO by Enrollment Wellcare Simple Essential (HMO) — 163 enrollees
  • HMO Plans Without Drug Coverage 0

2027 HMO Medicare Advantage plans in Williamson County, Illinois (comparison chart)
Plan Name Rating* Premium MOOP Rx Ded. Plan-ID
Wellcare Giveback
☆☆☆☆☆
 $0 $7,800 $700 H5779-010-0
Wellcare Simple Essential
☆☆☆☆☆
 $0 $5,500 $700 H5779-009-0
What is the total number of HMO plans offered in Williamson?

In 2027, Williamson County has 2 HMO plans with 271 enrollees.

How much do HMO plans cost in Williamson?

The typical HMO premium in Williamson is $0.00, and 2 plans have no monthly premium.

Medicare Advantage HMO-POS Plans

HMO-POS plans are structured like HMOs, requiring in-network care for the lowest costs, while allowing limited out-of-network access at higher cost. This provides added flexibility compared with standard HMO plans.

Total HMO-POS Plans
1
Average Monthly Premium
$0.00/mo
Total HMO-POS Enrollment
0
$0 Premium HMO-POS Plans
1
Average MOOP
$5,500
Top HMO-POS by Enrollment
— 0 enrollees
HMO-POS Plans Without Drug Coverage
0

2027 HMO-POS Medicare Advantage plans in Williamson County, Illinois (comparison chart)
Plan Name Rating* Premium MOOP Rx Ded. Plan-ID
Wellcare Simple Value
☆☆☆☆☆
 $0 $5,500 $700 H1416-084-0
What is the average monthly premium for HMO-POS plans?
HMO-POS plans in Williamson cost $0.00 per month on average.
Which HMO-POS plan is most popular in Williamson?
The most popular HMO-POS plan in Williamson is , with 0 enrollees.
How many HMO-POS plans in Williamson do not include drug coverage?
There are 0 HMO-POS plans in Williamson without prescription drug coverage.

CMS quality ratings for Medicare Advantage plans in Williamson County, IL (2027) are summarized below.

Quality Ratings for Medicare Advantage Plans in Williamson County, IL (2027)
Rating Category Number of Plans Percent of Plans
5 Stars No 5-star plans available. 0%
4 Stars (includes 5 Stars) 0 0%
3 Stars 5 100%
Below 3 Stars 0 0%
Not Rated 0 0%
Average Rating 3.4

* Star ratings are based on CMS quality measures and reflect plan performance for the 2027 rating period.

Medicare Advantage plans listed on this page are available to eligible beneficiaries residing in Williamson County, Illinois, including communities such as Carterville, Creal Springs, Herrin, Johnston City, Marion, and other areas throughout the county. Plan availability is determined by county of residence, not by city.

All plan counts, enrollment totals, averages, and percentage distributions are calculated at the county level using CMS data and include standard Medicare Advantage (MA/MAPD) plans only, based on a consistent aggregation methodology.

Data sources and methodology documentation .

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Data provenance is documented in accordance with the U.S. Core Data for Interoperability (USCDI) Provenance standard .