Turning 65 in San Antonio: your complete Medicare enrollment checklist.

You're approaching 65. Maybe you have a few months. Maybe you have a year. Either way, you've probably already started getting the mail — slick brochures from carriers you've never heard of, postcards promising "$0 premium plans," letters from AARP, calls from out-of-area numbers wanting to "review your Medicare options."

It's overwhelming. It's also designed to be. Most of what you're seeing is marketing, not education. So here's the actual checklist — the things you genuinely need to do, in the order you need to do them, based on what we see San Antonio clients miss every year.

The 7-month enrollment window (and why timing matters)

Your Initial Enrollment Period (IEP) is a 7-month window centered on your 65th birthday:

• 3 months before your birth month
• Your birth month
• 3 months after your birth month

If you sign up before your birth month, your coverage starts on the first day of your birth month. If you sign up during or after, coverage starts later — sometimes much later. This delay is one of the most common mistakes I see in San Antonio. People wait until their birthday to deal with it, and then they're scrambling.

5 to 6 months before your birthday: Start educating yourself

This isn't the time to enroll. This is the time to figure out which path you're going to take. The single most important question:

Are you going to choose Medicare Advantage or Original Medicare + a Medicare Supplement?

I cover this in detail in Medicare Advantage vs. Medicare Supplement: Which Is Right for Texans? — read that article before going further. Don't skip this step. The two paths have very different cost structures, different doctor networks, and very different long-term implications.

4 months before: Decide on Social Security timing

If you're already receiving Social Security retirement benefits, you'll be automatically enrolled in Medicare Part A and Part B when you turn 65. You don't need to do anything. Your card will arrive in the mail about 3 months before your birthday.

If you're not already on Social Security:

• You have to actively enroll in Medicare yourself
• You can apply online at ssa.gov/medicare/apply or in person at a Social Security office
• Don't skip Part B unless you have other "creditable coverage" — late enrollment penalties on Part B are permanent and added to your premium for life

Still working at 65?

This is a common situation in San Antonio — people working at major employers like USAA, H-E-B, or local universities past 65. The rules:

• Employer with 20+ employees: You can usually delay Part B without penalty as long as your employer health coverage qualifies as "creditable." Get this in writing from HR.
• Employer with fewer than 20 employees: Medicare becomes primary at 65. You generally do need to enroll in Part B to avoid gaps and penalties.
• HSA contribution warning: If you enroll in any part of Medicare (including Part A), you can no longer contribute to a Health Savings Account. There are real tax traps here — get advice before enrolling if you have an HSA.

3 months before: Gather your information

Before your consultation with an agent (or before going DIY on Medicare.gov), put together this list:

1. List of every prescription you take

Drug name, dose, how often, and ideally which pharmacy you fill at. This determines which Part D plan (or Advantage plan with drug coverage) actually fits you. Without this list, you're guessing — and guessing wrong on Part D can cost you over $1,000 a year.

2. List of every doctor and hospital you want to keep

Primary care physician. Any specialists you currently see — cardiologist, oncologist, endocrinologist, ophthalmologist, etc. Which hospital system do you prefer (Methodist, Baptist, CHRISTUS Santa Rosa, University Health)? Networks for Medicare Advantage plans differ widely.

3. Your monthly budget for healthcare

This isn't a hard question — it's just an honest one. What can you comfortably spend on healthcare each month between premiums and copays? $50? $200? $400? The answer shapes which plan type makes sense for you.

4. Your travel plans

Do you travel between Texas and another state regularly? Snowbird in Florida? Help with grandkids in Colorado? International travel? This affects whether a Medicare Advantage PPO, a Medicare Supplement, or something else fits best.

2 to 3 months before: Talk to an independent agent

This is the consultation step. I recommend an independent agent (not a captive one) because they can compare plans across every major carrier instead of pushing one company's product.

A good consultation should:

• Take 20–30 minutes by phone or Zoom
• Be free (independent agents are paid by carriers on enrollment, not by you)
• Result in 2–3 plan recommendations with the trade-offs explained, not a single sales pitch
• Give you time to think — no pressure to enroll on the call

If you're not getting that, you're talking to the wrong agent. Move on.

1 to 2 months before: Make your decision and enroll

Once you've compared plans, picked the one that fits, and reviewed it again to be sure — enroll. Your agent can handle the paperwork. Cards typically arrive 2–3 weeks after enrollment, and coverage starts the first of your birth month.

Common mistakes to avoid

• Waiting until your birthday to deal with it. By then you've lost the smooth handoff and may have a coverage gap.
• Picking based on premium alone. A $0 premium plan with the wrong network or wrong drug formulary can cost you thousands more than a $30/month plan that actually fits.
• Ignoring Part D when you don't take medications. Late enrollment penalties on Part D are permanent. Sign up for a cheap plan even if you don't currently need drugs.
• Going with the first agent who called you. Most cold callers are working from purchased lead lists and are paid only if they enroll you. Find an agent through referral or local search instead.
• Skipping the Medigap Open Enrollment window. If you want Medicare Supplement coverage, the 6 months after enrolling in Part B is the easiest time in your life to get it — no medical underwriting required.

Your turning-65 checklist (printable summary)

1. ☐ 6 months before: Decide between Medicare Advantage and Original Medicare + Supplement
2. ☐ 4 months before: Make your Social Security timing decision; handle employer coverage if still working
3. ☐ 3 months before: Gather prescription list, doctor list, budget, and travel info
4. ☐ 2–3 months before: Schedule consultation with independent Medicare agent
5. ☐ 1–2 months before: Enroll in your chosen plan
6. ☐ Birth month: Coverage begins. Use your new cards.
7. ☐ Every October-December (AEP): Annual review with your agent — does your plan still fit?