How to Sign Up for Medicare in Texas

Signing up for Medicare in Texas usually begins with Social Security, not an insurance company. Whether you must apply depends on whether you're already receiving certain retirement or disability benefits, your age, and your current health insurance.

The safest approach is to confirm your enrollment status and coverage start dates before shopping for additional plans.

Step 1: Check whether enrollment will be automatic

If you are already receiving Social Security retirement benefits before age 65, you will generally be enrolled automatically in Medicare Parts A and B. You should receive a Medicare card showing the effective dates.

Do not assume automatic enrollment if you have not started receiving benefits.

If you are not receiving Social Security benefits, you generally need to sign up yourself. You can apply for Medicare without claiming Social Security retirement benefits.

That distinction matters to Texans who plan to keep working or postpone retirement income.

Step 2: Identify your enrollment period

Before starting an application, confirm that you are eligible to enroll now. Most people approaching 65 use an Initial Enrollment Period, while those leaving qualifying active-employment group coverage may have a Special Enrollment Period.

These windows determine which application path you should use and what supporting evidence Social Security may request.

This page focuses on completing the application. For a full explanation of deadlines, penalties, and plan-change windows, see our Medicare enrollment periods guide.

If your main question is the best month to apply, use our Medicare application timing guide.

Step 3: Apply through Social Security

You can apply online through SSA.gov, call Social Security at 1-800-772-1213, or contact a Social Security office. Have your identifying information, relevant employment and coverage details, and preferred coverage dates available.

Social Security determines eligibility and processes Part A and B enrollment.

If you are applying after coverage through current employment, Social Security may require proof of that employment-based health coverage.

Confirm the required forms and dates rather than assuming that an employer insurance card alone establishes eligibility for a Special Enrollment Period.

Step 4: Understand the employer coverage exception

If you are applying after delaying Part B because of qualifying coverage through current employment, use the enrollment process Social Security specifies for that situation.

You may need an application for Part B and employer verification of your group health coverage.

Ask Social Security which forms and submission method apply to your circumstances.

Before requesting an effective date, have your benefits administrator confirm when active group coverage ends. This article explains what to submit; our working-past-65 guide explains whether delaying Part B is appropriate, and our payer-order guide explains how the plans coordinate claims.

Step 5: Choose how to receive coverage

Once you know your Part A and Part B dates, compare Original Medicare with optional Part D and Medigap against Medicare Advantage. You generally need Parts A and B to enroll in Medicare Advantage.

You also need both Parts A and B to buy a Medigap policy.

Your federal Medigap open enrollment period generally begins when you're 65 or older and enrolled in Part B and lasts six months. That period offers important protections against medical underwriting.

Do not assume that the annual Medicare open enrollment season gives everyone a new guaranteed right to buy Medigap.

Our Medicare Supplement insurance overview explains how a Medigap policy fits with Original Medicare.

Step 6: Confirm everything before your effective date

Review your Medicare card and check the effective dates for both Part A and Part B. If you chose private coverage, confirm the plan's start date, your prescriptions, pharmacies, doctors, and hospitals.

Keep copies of your applications and confirmation numbers.

If you are contributing to a Health Savings Account, understand that Medicare enrollment generally ends HSA contribution eligibility. Premium-free Part A can sometimes begin retroactively when you enroll after 65, creating an unexpected HSA contribution issue.

Check with a tax professional or benefits adviser before contributing.

What information should you gather before applying?

Have your Social Security number, date of birth, contact information, and a clear understanding of your existing insurance.

If you have worked past 65, document the dates you or your spouse worked and the dates you had qualifying employer group health coverage.

When using the Part B Special Enrollment Period, Social Security may request employer verification. You can review Social Security's Medicare sign-up instructions for current procedures and required forms.

Write down the date you want coverage to start and why. For example, if your employer coverage ends June 30, you may want Medicare coverage to begin July 1.

Do not simply assume an application submitted in June will create that result. Confirm your effective date with Social Security and coordinate any private Medicare plan's start date accordingly.

Should you sign up for Part A and Part B together?

The Medicare application may involve enrolling in Part A, Part B, or both, depending on your eligibility and existing coverage.

Before submitting it, decide which parts you want and confirm whether you are entitled to premium-free Part A.

Your requested coverage start dates should be consistent with any employer-plan termination date.

If you are considering delaying a part because you are working or contributing to a Health Savings Account, review the decision separately before applying. See Can You Delay Medicare If You're Still Working?.

The application process cannot correct an enrollment-timing decision made without understanding your employer benefits.

What happens after Social Security approves your application?

Check the Medicare card carefully. It should show your Medicare number and Part A and Part B effective dates.

Store the number securely and use it when enrolling in a Medicare Advantage, Part D, or Medigap plan. Keep a copy of your confirmation notice and the date of your application.

If your requested effective date is wrong, contact Social Security promptly rather than waiting until a medical claim is denied.

If you want Original Medicare, remember that prescription coverage usually requires a separate Part D decision. If you want Medicare Advantage, compare only plans offered in your service area and check every doctor and drug.

The official Medicare Plan Finder allows you to compare private plans using your location and medication information. Medigap policies are purchased separately and have different enrollment protections.

Texas-specific enrollment considerations

Medicare enrollment itself is federal, so you do not apply for Parts A and B through the State of Texas. However, Texas residents may seek local counseling through the Texas Health and Human Services Medicare resources.

Private plan options can differ significantly among Houston, Austin, Dallas, San Antonio, rural counties, and border communities. Check availability at your actual residential ZIP code rather than using a relative's address.

If you are under 65 and qualify for Medicare due to disability, the Medicare application and Medigap rules can differ from the standard age-65 path. Do not assume the same private-plan enrollment protections apply.

Ask specifically about your age, disability eligibility, and current Texas Medigap rules.

Final enrollment checklist

Before treating enrollment as complete, verify that you have received a Medicare number, confirmed the correct effective dates, decided how to receive Part A and B benefits, addressed prescription drug coverage, and checked whether any employer or retiree insurance will remain active.

If you chose a private plan, obtain its separate enrollment confirmation. A Medicare card by itself does not prove that a Part D or Medicare Advantage application was accepted.

Application walkthrough: what to check at each stage

1. Before applying: confirm whether you are already enrolled automatically and identify your current insurance. If you are working, establish your expected retirement and employer coverage end dates.
2. During the application: use Social Security's official Medicare enrollment process, enter accurate identifying information, and follow the instructions for the parts you are requesting. If you delayed Part B under qualifying employment coverage, ask which employer verification documents are required.
3. After submitting: save the confirmation and monitor your application status. An application receipt is not proof that coverage is active.
4. After approval: compare the effective dates on your Medicare card with the end date of any other insurance. Resolve mismatches before assuming a claim will be covered.
5. Before using coverage: verify whether a separate Part D, Medicare Advantage, or Medigap application is needed.

This walkthrough is a practical checklist, not a substitute for the current Social Security application instructions. Use Social Security's Medicare sign-up page for the official steps and forms.

Frequently Asked Questions

Can you apply for Medicare online?

Yes. Eligible applicants can use Social Security's online Medicare application process.

Can you enroll in Medicare without taking Social Security retirement benefits?

Yes. You do not have to start Social Security retirement payments to apply for Medicare.

Do you have to choose Medicare Advantage when you enroll?

No. You can receive benefits through Original Medicare instead and separately consider Part D and Medigap.

What if you already have employer health insurance?

Before changing coverage, verify whether Medicare or the employer plan pays first, whether you can delay Part B, and how the decision affects dependents.