Medicare in Texas
May 20, 2026
Texas Medicare quick facts (2026)
- Beneficiaries: Roughly 4.6 million Texans are enrolled in Medicare — third only to California and Florida.
- Active Advantage carriers: Humana, UnitedHealthcare, Blue Cross Blue Shield of Texas (Health Care Service Corp.), Aetna, Cigna, WellCare, Devoted Health, and others.
- State Medicaid program: Texas Medicaid (STAR+PLUS for seniors and people with disabilities) — relevant for dual-eligible coordination through D-SNPs and the Texas dual demonstration.
- SHIP resource: Texas Health Information, Counseling and Advocacy Program (HICAP).
Common Texas Medicare questions
Q: When can I enroll in Medicare in Texas?
A: Federal calendar — Initial Enrollment Period around your 65th birthday; Annual Enrollment Period October 15 – December 7, 2026.
Q: Can I switch Medigap plans in Texas without underwriting?
A: Generally only during your federal 6-month Medigap Open Enrollment Period or a guaranteed-issue trigger. Texas does not have a state birthday or anniversary rule. Texas does require Medigap insurers to offer coverage to under-65 Medicare beneficiaries.
Q: Why does Texas have so many Medicare Advantage plans?
A: Large Medicare population + dense urban markets + heavy carrier competition. The trade-off is more Annual Notice of Change letters to read each fall.
Q: What's STAR+PLUS?
A: STAR+PLUS is Texas Medicaid's managed care program for seniors and people with disabilities. Dual-eligibles (Medicare + Texas Medicaid) may qualify for D-SNPs.
Run the numbers for your situation: enrollment calculator · IRMAA calculator · Part D cost calculator.
Medicare in Texas — plans, enrollment, and how to compare.
What Texas residents should know about Medicare Advantage, Medicare Supplement, and Part D — and how plan availability is different in Texas.
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Medicare basics in Texas
Medicare is a federal program, so the core rules are the same in Texas as everywhere else — but the specific plans available, premiums, and carrier networks vary by ZIP code and by county.
Most Texas residents become eligible for Medicare at 65 through Social Security. See our eligibility guide for the full rules including disability and ESRD.
For the 7-month enrollment window timeline, see Turning 65.
What Texas residents typically compare
- Medicare Advantage — Many Texas counties have 20-50+ Advantage plans to choose from. Plans, premiums, and extras vary by county.
- Medicare Supplement (Medigap) — Plans are standardized federally, but premium pricing and underwriting rules vary by state. Texas has its own Medigap pricing rules.
- Part D prescription drug plans — Available statewide, but formularies (covered drug lists) and preferred pharmacy networks differ by plan.
See Advantage vs. Supplement for the side-by-side framework.
Texas Medigap timing rules
The federal Medigap Open Enrollment window is the same everywhere — 6 months starting the month you turn 65 AND have Part B. During that window, no medical underwriting.
Outside that window, most states (including Texas unless otherwise noted) allow Medigap carriers to use medical underwriting — meaning they can deny you or charge more based on health. A few states have year-round guaranteed-issue rules. Check Texas's State Health Insurance Assistance Program (SHIP) for current rules.
See our switching from Advantage to Medigap guide for the timing trap.
How to compare plans in Texas
- Confirm your ZIP code — plans differ within Texas by county
- List your prescriptions and check each one on the plan's formulary
- Confirm your doctors are in-network
- Compare premium + deductible + maximum out-of-pocket
- Check star ratings for plans you are weighing
- Ask about prior authorization requirements (common on Advantage)
Use our comparison framework to keep it organized.