Medicare Advantage in Tom Green County, Texas. About 24,620 Medicare beneficiaries live here, with roughly 49 percent in Medicare Advantage plans. Top carriers include Humana and UnitedHealthcare. For free help comparing plans, call Giron Agency, a licensed Texas agency, or visit gironagency.com.
Tom Green County Medicare Advantage — quick answer
Tom Green County, TX has 24,620 Medicare beneficiaries per CMS Q1 2024 data, with about 49% enrolled in Medicare Advantage. The top medicare advantage carriers are Humana, UnitedHealthcare, Aetna. We compare these plans for free and never charge a fee.
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The Tom Green County medicare advantage market
About 49% of Tom Green County's 24,620 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. Humana 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 17 Medicare Advantage plans are available in Tom Green County, so a side-by-side comparison genuinely matters. Medicare Advantage enrollment figures reflect the latest CMS data (May 2026).
Tom Green County at a glance
Population (2024 ACS)
120,103
Medicare beneficiaries
24,620
MA penetration
49%
Age 65 or older
17%
What makes Tom Green County different: Tom Green County anchors the Concho Valley around San Angelo, where the locally owned Shannon Medical Center is effectively the sole hospital system after it acquired its only competitor, San Angelo Community Medical Center, in 2020 (now operated as Shannon South Campus) and holds a state Certificate of Public Advantage. Roughly 48% of the county's ~24,000 Medicare beneficiaries are enrolled in Medicare Advantage, with Humana and UnitedHealthcare (Sierra) leading.
Top Medicare Advantage plans in Tom Green County
Humana
4.5-star CMS rating
UnitedHealthcare (Sierra Health and Life)
4-star CMS rating
Aetna
3.5-star CMS rating
WellCare
4-star CMS rating
Source: CMS Monthly MA Enrollment by State/County/Contract (latest Q1 2024). Enrollment figures refresh monthly at data.cms.gov.
Before you enroll: verify your hospital + doctor in Tom Green County
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. Tom Green County has 2
major hospital systems. Before you enroll, check that your preferred hospital and physicians
participate in the specific plan you're considering.
Major hospitals to verify
▸Shannon Medical Center
▸Shannon South Campus (formerly San Angelo Community Medical Center)
Call each hospital's billing office directly — or use the carrier's
network tool on the right to search by hospital name.
Or skip the cross-checking — we run network checks against your prescriptions and doctors
at no cost during any consult.
Medicare AEP opens in 131 days
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.
Major hospitals: Shannon Medical Center, Shannon South Campus (formerly San Angelo Community Medical Center)
Frequently Asked Questions
How many Medicare beneficiaries live in Tom Green County?▾
About 24,620 Texans in Tom Green County are enrolled in Medicare as of May 2026 CMS data. About 49% are in Medicare Advantage plans; the rest are in Original Medicare (with or without Medigap).
Who are the top Medicare carriers in Tom Green County?▾
The largest carriers in Tom Green County are Humana, UnitedHealthcare (Sierra Health and Life), Aetna, WellCare. We work with all of them and a few smaller carriers that often have better rates for specific situations.
What SHIP resources are available in Tom Green County?▾
Texas HICAP (Health Information, Counseling and Advocacy Program) (1-800-252-9240) provides free unbiased Medicare counseling. Major hospitals in the county include Shannon Medical Center, Shannon South Campus (formerly San Angelo Community Medical Center).
How many Medicare Advantage plans are available in Tom Green County?▾
As of May 2026, about 17 Medicare Advantage plans are available to Tom Green County residents, led by UnitedHealth Group, Inc., Humana Inc., CVS Health Corporation, Elevance Health, Inc.. We compare all of them side by side at no cost.
Why is Shannon Medical Center important for Medicare beneficiaries in Tom Green County?▾
Shannon Medical Center, formerly San Angelo Community Medical Center and now operated as Shannon South Campus, is the primary hospital system in Tom Green County. Over 48% of Medicare beneficiaries here are enrolled in Medicare Advantage plans from Humana or UnitedHealthcare, which often include local hospital coverage.
When can I enroll in a Medicare Advantage plan in this area?▾
You can enroll during the Annual Enrollment Period (AEP) from October 15 to December 7. Additionally, you may be able to switch plans outside of AEP if your health changes or if you move to a new address within Tom Green County.
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