2026 Medicare Advantage Plans in Williamson County, IL
Last update: . Enrollment data updated: August 15, 2026
For 2026, Williamson County, IL includes 14 Medicare Advantage plans. Enrollment across these plans totals approximately 2,058, with 12 $0 premium options and 0% rated 4 stars or higher.
This page and its statistics exclude Medicare Advantage Special Needs Plans (SNPs). Special Needs Plans in Williamson County, IL are summarized separately. Visit Medicare Options in Williamson County, IL to see more options.
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
- 10
- Average Monthly Premium
- $17.20/mo
- Total PPO Enrollment
- 1,639
- $0 Premium PPO Plans
- 8
- Average MOOP
- $7,065
- Top PPO by Enrollment
- Aetna Medicare Signature (PPO) — 574 enrollees
- PPO Plans Without Drug Coverage
- 3
| Plan Name | CMS Stars* | Premium/Mo | MOOP | Rx Ded. | CMS ID |
|---|---|---|---|---|---|
| Aetna Medicare Eagle | $0 | $4,500 | N/A | H7301-023-0 | |
| Aetna Medicare Enhanced | $69 | $8,750 | $615 | H7301-034-0 | |
| Aetna Medicare Signature | $0 | $9,250 | $615 | H7301-027-0 | |
| Blue Cross Medicare Advantage Dental Premier | $0 | $7,500 | $615 | H8634-021-0 | |
| Blue Cross Medicare Advantage Essential | $0 | $6,700 | $450 | H8634-012-0 | |
| Blue Cross Medicare Advantage Health Choice | $0 | $9,000 | $615 | H8634-018-0 | |
| Blue Cross Medicare Advantage Protect | $0 | $6,750 | N/A | H8634-019-0 | |
| HealthSpring True Choice | $0 | $4,250 | $200 | H7849-059-0 | |
| Humana USAA Honor Giveback | $0 | $6,750 | N/A | R5361-001-0 | |
| HumanaChoice R5361-002 | $103 | $7,200 | $615 | R5361-002-0 |
- What is the average monthly premium for PPO plans in Williamson?
- PPO plans in Williamson cost $17.20 per month on average.
- Which PPO plan has the highest enrollment in Williamson?
- The most popular PPO plan in Williamson is Aetna Medicare Signature (PPO), with 574 enrollees.
- How many PPO plans in Williamson do not include prescription drug coverage?
- 3 PPO plans in Williamson do not include prescription drug coverage.
Medicare Advantage HMO Plans
Health Maintenance Organization (HMO) plans are built around a defined network of doctors and hospitals. Care is generally covered only within the network, except in emergencies, but this structure often results in lower premiums and out-of-pocket costs.
| Plan Name | CMS Stars* | Premium/Mo | MOOP | Rx Ded. | CMS ID |
|---|---|---|---|---|---|
| Wellcare Giveback | $0 | $7,500 | $615 | H5779-010-0 | |
| Wellcare Patriot Giveback | $0 | $5,500 | N/A | H5779-011-0 | |
| Wellcare Simple Essential | $0 | $4,200 | $615 | H5779-002-0 | |
| Wellcare Simple Essential Value | $0 | $3,900 | $615 | H5779-009-0 |
What is the total number of HMO plans offered in Williamson?
There are 4 HMO plans in 2026, covering 419 enrollees.
How much do HMO plans cost in Williamson?
The average HMO premium in Williamson is $0.00 per month, with 4 plans offering $0 premiums.
What is the top HMO by enrollment in Williamson?
Wellcare Simple Essential Value (HMO) is the top HMO in Williamson, with 164 enrollees.
What is the number of HMO plans without Part D coverage in Williamson?
1 HMO plans in Williamson do not include prescription drug coverage.
CMS quality ratings for Medicare Advantage plans in Williamson County, IL (2026) are summarized below.
| 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 | 14 | 100% |
| Below 3 Stars | 0 | 0% |
| Not Rated | 0 | 0% |
| Average Rating | 3.11 | |
* CMS assigns Medicare Advantage star ratings annually based on plan quality and performance measures.
- CMS.gov, Medicare Advantage Landscape Source Files — Last accessed August 15, 2026
- CMS.gov, Medicare Part C & D Performance Data — Last accessed August 15, 2026
- CMS.gov, Medicare Advantage & Part D Contract and Enrollment Data — Last accessed August 15, 2026
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 .
- Medicare.gov, "Understanding Medicare Advantage Plans" — Last accessed 25 May, 2025
- Medicare.gov, "Compare Original Medicare & Medicare Advantage" — Last accessed 25 May, 2025
- NCOA.org, "5 Steps to Choosing the Right Medicare Plan for You" — Last accessed 25 May, 2025
MedicarePlans.com is an independent informational resource and has no affiliation with, or endorsement from, the U.S. Government or the federal Medicare program.
Data provenance is documented in accordance with the U.S. Core Data for Interoperability (USCDI) Provenance standard .
Page content independently curated and maintained by David W. Bynon, Editorial Steward, using a standardized, data-driven methodology for accurate, non-commercial Medicare plan interpretation and resolution.