Medicare Part D Prescription Drug Coverage in Texas

How Part D plans are generally structured

Part D plans are offered by private insurance companies approved by Medicare, and each plan maintains its own list of covered drugs, often called a formulary. Formularies are typically organized into cost tiers, with different copay or coinsurance amounts depending on which tier a medication falls into. Plans can also apply rules such as prior authorization, quantity limits or step therapy to certain medications, which can affect how and when a drug is covered. Because formularies and rules vary by plan and can change from year to year, reviewing your specific medications against a plan's current formulary is an important step before enrolling.

Pharmacy networks and access in Texas

Part D plans generally work with a network of pharmacies, and using an in-network or preferred pharmacy can affect your cost for a given prescription. In larger Texas metro areas, plans may include a wide range of pharmacy options nearby. In smaller communities across West Texas, the Panhandle or the Rio Grande Valley, the number of nearby preferred pharmacies may be more limited, so it can be worth checking whether your usual pharmacy, or a mail-order option, is included in a plan's network before enrolling.

Standalone Part D versus Advantage-bundled coverage

If you have Original Medicare, you would typically need to enroll in a standalone Part D plan separately to get drug coverage. If you choose a Medicare Advantage plan that includes drug coverage, your Part D benefits are usually built into that same plan, and you generally would not enroll in a separate standalone Part D plan on top of it. Comparing how your specific medications are covered under different approaches is a reasonable way to evaluate your options, since coverage and costs can differ meaningfully between plans.

Enrollment timing and potential penalties

You can generally enroll in Part D during your Initial Enrollment Period when you first become eligible for Medicare. The Annual Enrollment Period (October 15 to December 7) allows you to join, switch or drop Part D coverage for the following year. If you go without creditable prescription drug coverage for a continuous period after you're first eligible, you may face a late enrollment penalty when you do enroll, so understanding your creditable coverage status matters. Certain qualifying life events may allow enrollment outside these standard windows through a Special Enrollment Period.

Who this may help

• People new to Medicare who need to decide on drug coverage
• Current Part D enrollees comparing formularies during Annual Enrollment
• People whose medications or pharmacy have changed during the year
• Texans in smaller communities wanting to confirm pharmacy network access

Potential benefits

• A structured way to obtain prescription drug coverage alongside Medicare
• Ability to compare formularies and pharmacy networks before choosing a plan
• Protection against potential late enrollment penalties when you enroll on time

What to consider

• Formularies and cost tiers vary by plan and can change year to year
• Preferred pharmacy networks affect your cost and may be more limited in some areas
• Going without creditable coverage for too long may lead to a late enrollment penalty
• RGI Group does not offer every Part D plan available in Texas

How enrollment works

• List your current medications and typical pharmacy
• Check whether your medications and pharmacy are included in a plan's formulary and network
• Compare a few plan options side by side for your specific situation
• Discuss your questions with us by phone or virtual appointment
• Confirm final formulary and cost details on Medicare.gov before enrolling

Frequently asked questions

• Does RGI Group offer every Part D plan available in Texas? No. We do not offer every plan or carrier available in every part of Texas. Medicare.gov's plan finder can show the full range of Part D plans available in your area.
• What is a formulary? A formulary is a plan's list of covered prescription drugs, usually organized into cost tiers. Formularies vary by plan and can change annually, so it's worth checking your medications against a plan's current formulary.
• Do I need a standalone Part D plan if I have Medicare Advantage? Not usually, if your Medicare Advantage plan already includes drug coverage. In that case, your Part D benefits are typically built into that plan rather than requiring a separate standalone plan.
• What happens if I don't enroll in Part D when I'm first eligible? If you go without creditable prescription drug coverage for a continuous period after becoming eligible, you may face a late enrollment penalty when you do enroll later. It's worth understanding your creditable coverage status to avoid surprises.
• Can I change my Part D plan every year? Yes, generally during the Annual Enrollment Period (October 15–December 7), you can join, switch or drop Part D coverage for the following year.
• Will my pharmacy always be in-network with my Part D plan? Not necessarily. Pharmacy networks vary by plan and can be more limited in smaller communities, so it's worth confirming your usual pharmacy is included, or checking mail-order options, before enrolling.
• Does RGI Group have an office in my city? No. RGI Group has one office, in Austin, and serves Texas residents statewide by phone and virtual appointment. Paperwork can usually be completed electronically, so you do not need to travel to meet with us.
• Is there a cost to review my options with RGI Group? You do not pay RGI Group a separate fee to review coverage options. You are also free to enroll on your own through the official government resources linked on this page.
• Can we talk in Spanish? Yes. Appointments and follow-up can be handled in English or Spanish, whichever you prefer.
• Which plans and carriers are available to me? Availability depends on your county, eligibility, and the product you are looking at, and it can change from year to year. We can tell you what we are able to offer for your situation rather than promise a specific plan or price.
• What should I have ready for a first conversation? Your ZIP code, who needs coverage, the doctors or prescriptions that matter to you, and a general sense of your budget. Please do not send Social Security numbers, Medicare ID numbers, date of birth, income, diagnoses, or prescription details through this website.

Official resources

• Medicare.gov — https://www.medicare.gov (Compare Part D prescription drug plans and check drug lists using the official plan finder.)
• Texas Department of Insurance — https://www.tdi.texas.gov (Consumer information on Part D prescription drug plans sold in Texas.)
• 1-800-MEDICARE — https://www.medicare.gov/talk-to-someone (Ask questions about Part D coverage and enrollment timing.)

Talk with a licensed Texas agent

Call or text (346) 888-8811. Office: 5900 Balcones Drive, Ste 100, Austin, TX 78731. Open 24 hours, 7 days a week. Licensed in Texas. Guidance available in English and Spanish.