Round Rock-area carriers, real enrollment data, free quotes from a licensed Texas agent.
✓ Free • no obligation • about 90 seconds
Matt Giron
Licensed in Texas
Williamson County, TX has 103,763 Medicare beneficiaries per CMS Q1 2024 data, with about 48% enrolled in Medicare Advantage. The top medicare advantage carriers are Humana Gold Plus H4007, Baylor Scott & White Medicare Advantage, UnitedHealthcare AARP Medicare Advantage Plan 1. We compare these plans for free and never charge a fee.
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About 48% of Williamson County's 103,763 Medicare beneficiaries are in Medicare Advantage — right around the national norm — so you'll find a genuine mix of competitive MA plans and Medigap options here rather than a one-sided market. Only 13% of Williamson residents are 65 or older, so it's a younger county where fewer agents specialize in Medicare locally — exactly the gap a dedicated Texas agent fills. Humana Gold Plus H4007 currently leads the county by enrollment, but the lowest total-cost plan for your specific drugs and doctors is often a smaller carrier — which is why we run all of them side by side instead of pushing the biggest name. Right now roughly 32 Medicare Advantage plans are available in Williamson County, so a side-by-side comparison genuinely matters. Medicare Advantage enrollment figures reflect the latest CMS data (May 2026).
What makes Williamson County different: Home of Sun City Texas (Georgetown) — TX's largest active-adult retirement community (~17,000 residents). Highest-conversion Medigap county outside Sarasota FL.
Humana Gold Plus H4007 (HMO)
4-star CMS rating
Baylor Scott & White Medicare Advantage (HMO)
4-star CMS rating
UnitedHealthcare AARP Medicare Advantage Plan 1 (HMO)
4-star CMS rating
Source: CMS Monthly MA Enrollment by State/County/Contract (latest Q1 2024). Enrollment figures refresh monthly at data.cms.gov.
Each Medicare Advantage plan builds its own provider network — a hospital that's in-network on one plan may be out-of-network on another. Williamson County has 3 major hospital systems. Before you enroll, check that your preferred hospital and physicians participate in the specific plan you're considering.
Call each hospital's billing office directly — or use the carrier's network tool on the right to search by hospital name.
Free help in Williamson County: TX HICAP — Capital Area Council of Governments — call 1-800-252-9240. SHIP counselors offer free unbiased Medicare guidance and can run network checks at no cost.
Or skip the cross-checking — we run network checks against your prescriptions and doctors at no cost during any consult.
131 daysuntil open
Outside the windows, Special Enrollment Periods (SEP) still let you change plans if you moved, lost coverage, qualify for Extra Help / dual eligible, or had a plan terminated. Call to see if you qualify.
Check SEP eligibility (15-min) →Pick a time on Matt's calendar — 15 minutes, no sales pressure, no obligation. We'll walk through the Williamson County plans that fit your situation.
About 103,763 Texans in Williamson County are enrolled in Medicare as of May 2026 CMS data. About 48% are in Medicare Advantage plans; the rest are in Original Medicare (with or without Medigap).
The largest carriers in Williamson County are Humana Gold Plus H4007 (HMO), Baylor Scott & White Medicare Advantage (HMO), UnitedHealthcare AARP Medicare Advantage Plan 1 (HMO). We work with all of them and a few smaller carriers that often have better rates for specific situations.
TX HICAP — Capital Area Council of Governments (1-800-252-9240) provides free unbiased Medicare counseling. Major hospitals in the county include St. David's Round Rock Medical Center, Baylor Scott & White Medical Center–Round Rock, Cedar Park Regional Medical Center.
As of May 2026, about 32 Medicare Advantage plans are available to Williamson County residents, led by UnitedHealth Group, Inc., Humana Inc., Baylor Scott & White Health, CVS Health Corporation. We compare all of them side by side at no cost.
Residents at Sun City Texas, a large retirement community, can benefit from Medicare Advantage plans that offer comprehensive coverage including hospital and medical benefits, tailored to their active lifestyle.
Seniors should consider enrolling during the Annual Enrollment Period (AEP) from October 15 to December 7 each year. They can also enroll outside this period if they have a Special Election Period due to a life event.
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