Medicare decisions require timely action. For Houston-area seniors, September is an appropriate time to review current coverage and prepare for the next enrollment window.
The Medicare Annual Enrollment Period for 2027 coverage runs from October 15 through December 7, 2026. Changes made during this period generally begin January 1, 2027.
This guide explains Medicare basics, enrollment periods, plan choices, and common mistakes. It also outlines how a Medicare agent in Houston can simplify the process.
Medicare basics
Medicare is federal health insurance for people who are generally age 65 or older. Some individuals qualify earlier because of a disability, End-Stage Renal Disease, or ALS.
Medicare has several parts.
Part A: Hospital Insurance
Part A generally helps cover:
- Inpatient hospital care
- Skilled nursing facility care
- Hospice care
- Some home health care
Many people receive premium-free Part A based on their work history. However, deductibles and other costs can still apply.
Part B: Medical Insurance
Part B generally helps cover:
- Doctor visits
- Outpatient services
- Preventive care
- Medical equipment
- Laboratory services
- Some home health services
The standard Part B premium for 2026 is $202.90 per month. The annual Part B deductible is $283. Higher-income beneficiaries may pay more through an Income-Related Monthly Adjustment Amount, or IRMAA.
Review current details through Medicare.gov.
Part C: Medicare Advantage
Medicare Advantage is an alternative to Original Medicare. Private insurance companies approved by Medicare provide these plans.
Most Medicare Advantage plans combine:
- Part A coverage
- Part B coverage
- Part D prescription drug coverage
Plans may also include dental, vision, hearing, fitness, or other benefits. Availability varies by location.
Medicare Advantage plans usually use provider networks. Some plans require referrals or prior authorization for certain services.
Review Prosperity Insurance Solutions’ Medicare Advantage guidance to learn more about plan comparisons and enrollment timing.
Part D: Prescription Drug Coverage
Part D helps pay for prescription medications. Coverage is available through standalone drug plans or many Medicare Advantage plans.
Each Part D plan has its own:
- Drug list, also called a formulary
- Pharmacy network
- Premium
- Deductible
- Copayments or coinsurance
- Coverage rules
Prescription coverage can change each year. Review it even if medications remain the same.
Medigap: Medicare Supplement Insurance
Medigap policies help pay certain costs that Original Medicare doesn’t fully cover. These costs may include deductibles, copayments, and coinsurance.
Medigap works with Original Medicare. It doesn’t work with Medicare Advantage.
A separate Part D plan is usually needed for prescription coverage. Medigap premiums vary by plan, insurer, location, and other factors.
The six-month Medigap Open Enrollment Period generally begins when an individual is at least 65 and enrolled in Part B. Applying during this period may provide important enrollment protections.
When to enroll in Medicare
Medicare enrollment depends on age, existing coverage, and qualifying life events.
Initial Enrollment Period
The Initial Enrollment Period is the first opportunity to enroll in Medicare.
It generally lasts seven months:
- Three months before the month you turn 65
- The month you turn 65
- Three months after your birthday month
Enrollment timing can affect when coverage begins. Confirm the correct dates through Medicare’s enrollment guidance.
If you already receive Social Security benefits, you may be automatically enrolled in Part A and Part B. If not, you may need to apply through Social Security.
Annual Enrollment Period
The Medicare Annual Enrollment Period runs from October 15 through December 7 each year.
For the 2026 enrollment season, this period applies to coverage changes for 2027.
During this window, you may generally:
- Join a Medicare Advantage plan
- Change Medicare Advantage plans
- Return to Original Medicare
- Join, change, or drop a Part D plan
- Add or remove prescription drug coverage
Use the official Medicare Plan Compare tool to review plans available in your Houston ZIP code.
Medicare Advantage Open Enrollment Period
The Medicare Advantage Open Enrollment Period runs from January 1 through March 31.
This period is available to people already enrolled in Medicare Advantage.
You may:
- Switch to another Medicare Advantage plan
- Return to Original Medicare
- Join a standalone Part D plan after returning to Original Medicare
You generally can’t use this period to switch from Original Medicare into Medicare Advantage.
Special Enrollment Periods
A Special Enrollment Period may apply after certain life events.
Examples include:
- Moving outside a plan’s service area
- Losing employer or union coverage
- Losing Medicaid eligibility
- Moving into or out of a long-term care facility
- Qualifying for Extra Help
- Experiencing certain exceptional circumstances
Rules vary by situation. Contact Medicare, Social Security, or a qualified insurance professional before making a coverage change.
Employer coverage requires particular attention. COBRA, retiree coverage, and Marketplace coverage may not qualify as current-employment coverage for every enrollment rule.
Houston Medicare plan choices
Medicare options can vary between Houston-area ZIP codes and counties. A plan available in Harris County may not have the same network or benefits in Montgomery, Fort Bend, Brazoria, or Galveston County.
Before selecting a plan, check the following:
- Your primary care provider
- Specialists
- Preferred hospitals
- Pharmacies
- Prescription medications
- Monthly premium
- Annual deductible
- Copayments
- Out-of-pocket maximum
- Referral requirements
- Prior authorization rules
- Dental and vision benefits
- Travel and out-of-area coverage
Network participation can change. Verify provider information with both the plan and the provider’s office.
Common Medicare mistakes
1. Missing an enrollment deadline
Missing the Initial Enrollment Period may delay coverage. It may also create late enrollment penalties.
Mark the relevant dates on a calendar. Start reviewing options before the deadline.
2. Assuming a current plan stays the same
Medicare Advantage and Part D plans can change premiums, benefits, formularies, provider networks, and cost-sharing rules.
Read the Annual Notice of Change when it arrives. Medicare plans generally send this document before the Annual Enrollment Period.
3. Comparing only the monthly premium
A low or zero-dollar premium doesn’t show the full cost of coverage.
Compare:
- Annual deductible
- Doctor copays
- Hospital costs
- Specialist costs
- Prescription expenses
- Out-of-pocket maximum
- Additional service costs
Estimate total yearly costs instead of focusing on one number.
4. Ignoring prescription changes
A drug may move to a different tier. A pharmacy may no longer be preferred. A plan may add prior authorization or quantity limits.
Enter every prescription into Medicare’s Plan Compare tool. Confirm the dosage and frequency.
5. Checking only the doctor’s name
A plan may list a medical group but not include every doctor within that group.
Confirm your specific doctor, specialists, hospitals, and preferred pharmacy.
6. Confusing Medicare Advantage and Medigap
These are different coverage paths.
Medicare Advantage replaces the way you receive most Part A and Part B benefits. Medigap supplements Original Medicare.
You generally can’t use both at the same time.
7. Making changes without reviewing other coverage
Changing Medicare coverage may affect employer, union, retiree, Medicaid, VA, or TRICARE benefits.
Contact the benefits administrator before enrolling in another plan.
8. Responding to unsolicited Medicare requests
Protect your Medicare Number and personal information.
Medicare plans and agents must follow marketing rules. Don’t provide sensitive information to an unexpected caller or visitor without verifying who they are.
A practical Medicare enrollment checklist
Complete these steps before October 15:
- Find your Medicare card and current plan documents.
- List your doctors, specialists, hospitals, and pharmacies.
- Record every prescription, dosage, and frequency.
- Review your Annual Notice of Change.
- Compare plans available in your Houston ZIP code.
- Check provider networks and drug formularies.
- Compare estimated annual costs.
- Review referral and prior authorization requirements.
- Confirm the enrollment deadline.
- Save your enrollment confirmation.
The official Medicare guide to joining a plan provides additional instructions.
How Prosperity Insurance Solutions can help
Medicare options can appear similar while using different networks, formularies, and cost structures.
Prosperity Insurance Solutions provides personalized Medicare guidance for Houston-area clients and families. The process includes:
- Reviewing your current coverage
- Identifying your doctors and prescriptions
- Comparing available plan options
- Checking network and formulary details
- Explaining costs in plain language
- Reviewing enrollment deadlines
- Supporting the application process
The goal is to provide clear information without unnecessary complexity.
Prosperity Insurance Solutions is based in The Woodlands and serves clients across multiple states. Schedule a Medicare review through the contact page or call 832-430-2149.
Final review
Start your Medicare enrollment review before October 15, 2026.
Compare more than the monthly premium. Check your doctors, hospitals, prescriptions, pharmacies, benefits, and estimated annual costs.
If you need help, contact Prosperity Insurance Solutions for a personalized Medicare review.
This article provides general information and isn’t a substitute for official Medicare guidance. Plan availability, costs, benefits, and eligibility rules vary. Confirm current details through Medicare.gov or your plan documents.