Medicare Supplement in Grayson County, Texas. About 32,619 Medicare beneficiaries live here, with roughly 48 percent in Medicare Advantage plans. Top carriers include UnitedHealthcare and UnitedHealthcare. For free help comparing plans, call Giron Agency, a licensed Texas agency, or visit gironagency.com.
Grayson County, TX has 32,619 Medicare beneficiaries per CMS Q1 2024 data, with about 48% enrolled in Medicare Advantage. The top medicare supplement carriers are UnitedHealthcare, UnitedHealthcare, UnitedHealthcare. We compare these plans for free and never charge a fee.
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The Grayson County medicare supplement market
About 48% of Grayson County's 32,619 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. UnitedHealthcare 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 26 Medicare Advantage plans are available in Grayson County, so a side-by-side comparison genuinely matters. Medicare Advantage enrollment figures reflect the latest CMS data (May 2026).
Grayson County at a glance
Population (2024 ACS)
150,532
Medicare beneficiaries
32,619
MA penetration
48%
Age 65 or older
18%
What makes Grayson County different: Grayson County is the population and healthcare hub of the Texoma region, home to the 414-bed Texoma Medical Center in Denison and AHS Sherman Medical Center (formerly Wilson N. Jones); about 27,000 Medicare beneficiaries coexist with a booming Sherman semiconductor corridor (Texas Instruments, GlobiTech) that is reshaping the county's retiree-and-worker mix.
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 Grayson County
Each Medicare Supplement plan builds its own provider network — a hospital that's in-network
on one plan may be out-of-network on another. Grayson 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
▸Texoma Medical Center (Denison)
▸AHS Sherman Medical Center (formerly Wilson N. Jones)
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 Grayson County: Texas HICAP — 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.
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: Texoma Medical Center (Denison), AHS Sherman Medical Center (formerly Wilson N. Jones)
Frequently Asked Questions
How many Medicare beneficiaries live in Grayson County?▾
About 32,619 Texans in Grayson 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).
Who are the top Medicare carriers in Grayson County?▾
The largest carriers in Grayson County are UnitedHealthcare (AARP Medicare Advantage Extras, HMO-POS), UnitedHealthcare (AARP Medicare Advantage Essentials, HMO-POS), UnitedHealthcare (AARP Medicare Advantage, PPO). 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 Grayson County?▾
Texas HICAP (1-800-252-9240) provides free unbiased Medicare counseling. Major hospitals in the county include Texoma Medical Center (Denison), AHS Sherman Medical Center (formerly Wilson N. Jones).
How many Medicare Advantage plans are available in Grayson County?▾
As of May 2026, about 26 Medicare Advantage plans are available to Grayson County residents, led by UnitedHealth Group, Inc., Humana Inc., CVS Health Corporation, Health Care Service Corporation. We compare all of them side by side at no cost.
How does Medicare Supplement fit into the healthcare landscape of Grayson County?▾
With over 27,000 Medicare beneficiaries and a booming semiconductor industry in Sherman, our local agent can help you find the right Medicare Supplement plan to cover your unique needs at Texoma Medical Center.
When is the best time to enroll in Medicare Supplement plans?▾
You can enroll during Annual Enrollment Period (AEP) from Oct 15 to Dec 7, or any other time if you have a Special Enrollment Period (SEP). Matt is here to help guide you through the process and compare options.
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Educational only — not medical or legal advice. We do not offer every plan in your area. Call 1-800-MEDICARE for all options.
