Medicare Advantage in Williamsburg County, SC, for 2027.
CMS lists 65 Medicare Advantage plans here for 2027, 3 more than 2026 (62). 5,175 people in the county had an individual Medicare Advantage plan in October 2026.
Sources: CMS CY2027 plan file (October 2026 release), CMS CY2026 plan file (September 2026 release), CMS enrollment by county (CPSC), October 2026, CMS 2027 Plan Crosswalk (October 1, 2026), CMS 2027 Star Ratings Data Tables (October 8, 2026). Member counts are floors because CMS hides counts of 10 or fewer.
The county in numbers
Plans that end here for 2027
1 plans with members in the county end or leave it, plus 11 with 10 or fewer members here. CMS moves 0 members to another plan, and 4,898 stay in the same plan.
| Plan | Insurer | Members | Why |
|---|---|---|---|
| Aetna Medicare Signature (PPO) | CVS Health | 173 | Plan leaves this county |
Who holds the members
- UnitedHealth2,798
- Humana1,178
- CVS Health363
- Devoted Health296
- Centene283
- Health Care Service96
Individual Medicare Advantage members by parent company, October 2026.
Top rated plans sold here
- Clover Health LiveHealthy (PPO)Clover Health5.0
- Clover Health LiveHealthy Giveback (PPO)Clover Health5.0
- Clover Health Valor (PPO)Clover Health5.0
- AARP Medicare Advantage Patriot No Rx SC-MA2 (PPO)UnitedHealth4.5
- AARP Medicare Advantage from UHC SC-0004 (PPO)UnitedHealth4.5
- DEVOTED C-SNP CHOICE 004 SC (PPO C-SNP)Devoted Health4.5
- DEVOTED C-SNP CHOICE ENHANCED 005 SC (PPO C-SNP)Devoted Health4.5
- DEVOTED C-SNP CHOICE GIVEBACK EXTRAS 045 SC (PPO C-SNP)Devoted Health4.5
2027 overall Star Rating, 4.5 or more. Each plan's measure stars are in the county lookup.
See every plan, premium and copay in the free lookup.
Sort all 65 plans, open each plan's benefits and star measures, and see what each insurer paid agents in 2026.
Open Williamsburg in the lookupWorking this county for AEP?
The AEP 2027 County Kit puts this county and your others in one file: the plans that end, where members land, what is still sold and a crosswalk sheet, with every number tied to its CMS file.
See the AEP 2027 County KitAll South Carolina county pages. Facts from public CMS files, prepared by Health and Tech Now. Not plan advice. Check a plan's Summary of Benefits before you enroll.