Turning 65 in Utah · The paperwork
What Documents Do I Need to Sign Up for Medicare at 65?
Most people turning 65 picture a folder of birth certificates and tax forms. For a lot of Utahns the real answer is a Social Security number and twenty minutes online. The paperwork that does matter shows up in two places: when Social Security has no record of your age, and when you retire after 65 and have to prove you had job coverage.
The bottom line
- Already getting Social Security? You need nothing. Medicare.gov says your card arrives 3 months before coverage starts.
- Not yet? You sign up with Social Security, not Medicare, and online is the fastest route. Have your Social Security number, birth date and place, and any employer health plan dates.
- A birth certificate only if asked. Social Security does not ask again for proof of age it already has. When it does ask, it wants the original or a certified copy, never a plain photocopy.
- Retiring after 65? Two forms: CMS-40B and the employer's CMS-L564, sent within 8 months of losing the coverage.
First question: are you signing up at all?
Whether you have any paperwork depends on one thing: whether you are already collecting Social Security. Medicare.gov's sign-up tool says that if you start benefits "at least 4 months before you turn 65," you "automatically get Medicare when you turn 65," and "we'll mail you a welcome package with your Medicare card 3 months before your Medicare coverage starts." No application, no documents.
Everyone else gets a different answer from the same tool: "Contact Social Security to sign up for Medicare." That covers a lot of Utahns turning 65 now, because many are still working or waiting to claim Social Security later. Our post on getting Medicare at 65 without taking Social Security covers why the two can be separate.
What to have ready, situation by situation
| Your situation | How you apply | What to have ready |
|---|---|---|
| Already collecting Social Security 4+ months before 65 | Nothing. Enrolled automatically | Watch for the card about 3 months before your birthday month; decide whether to keep Part B if you have job coverage |
| Not collecting Social Security yet, signing up at 65 | Online at Social Security (my Social Security account), by phone, or at an office | Social Security number, date and place of birth, any current employer health plan dates; a birth record only if Social Security asks |
| Retiring after 65, leaving employer coverage | CMS-40B plus CMS-L564, by mail or fax to Social Security (or apply online) | Medicare number, employment and coverage dates, the employer's Section B (or other proof of the coverage) |
| Missed your window | January 1 – March 31 with CMS-40B, or CMS-10797 if an exceptional condition applies | Medicare number; for CMS-10797, the facts of the exceptional condition |
| You or your spouse worked for a railroad | Railroad Retirement Board, 1-877-772-5772 | Ask the RRB; it runs its own Medicare enrollment |
Sources: Medicare.gov, How do I sign up; Medicare.gov, Ready to sign up; forms CMS-40B and CMS-L564.
The online application: an account, then a short interview
Medicare.gov calls applying online at Social Security "the easiest and fastest way to sign up," and notes the one step people miss: "You'll need to create your secure my Social Security account to sign up for Medicare or apply for benefits." Set that account up before the day you plan to apply, so a snag with the identity check does not hold up the application.
The application itself asks about you more than it asks for papers: your Social Security number, your date and place of birth, your citizenship, and whether you or your spouse have health coverage through current work, with the dates. Have the employer plan's start date, and the date it will end if you know it. That answer decides whether you need Part B now or can wait, which is the subject of our post on Medicare at 65 while still working.
Medicare.gov says the welcome package with your Medicare card comes "about 2 weeks after you sign up." You need that Medicare number to "join a plan, or buy supplemental insurance," so the card is the real starting gun for choosing Medigap or Medicare Advantage.
When Social Security asks for a birth certificate
This is where most of the worry comes from, and Social Security's own policy manual, the POMS, is clearer than the summaries online.
- If your age is already on file, you are not asked again. POMS GN 00302.010 says people who "previously established their age in connection with a claim for benefits with SSA or an SSN application ... will not be required to resubmit evidence of age." Many people proved their birth date when they got a Social Security card.
- If it is not, they want an early birth record. POMS GN 00302.050 tells staff to "ask every claimant under age 73 to submit a public or religious record of birth established before age 5." For most people that is the state birth certificate. Utah-born applicants order certified copies from Utah's Office of Vital Records and Statistics; people born elsewhere order from their birth state.
- Originals or certified copies only. POMS GN 00301.030 says "a claimant must submit the original record or a custodian certified photocopy." A plain photocopy works only if you "submit the original along with the photocopy," and "an electronically certified copy is not acceptable when we require a certified document."
One more piece of paper applies to some Utahns born abroad. Part B for someone without premium-free Part A requires being "a U.S. citizen, or a non-citizen lawfully admitted for permanent residence who has resided in the U.S. continuously for the 5-year period" before enrolling, per POMS HI 00805.005. Keep a naturalization certificate, U.S. passport or green card handy if that is you.
Applying this year?
Tell us your birthday month and whether you have job coverage. We will lay out your sign-up dates, which forms (if any) you need, and what to choose once the Medicare card arrives. Free, by phone anywhere in Utah.
Book a Turning-65 call →Retiring after 65: the two-form packet
The heaviest paperwork in Medicare belongs to the person who kept working past 65 and is now leaving the employer plan. If you already have Part A, Part B comes through form CMS-40B, which asks for your Medicare number and the month and year your employment and employer coverage started and ended. It goes with form CMS-L564: "You complete Section A of this form, then ask your employer to fill out Section B."
The L564 states the two conditions plainly. You "must have had group health plan coverage through your or your spouse's current employment since the first month you were eligible for Medicare Part B," and "your coverage must not have ended more than 8 months ago." That 8-month clock starts when the job ends, not when COBRA ends. Medicare.gov adds that if you want Part B to start the day the job coverage stops, you sign up the month before.
Small Utah employers sometimes close, change payroll companies, or simply never return the form. Medicare.gov's answer for that: "complete Section B of the CMS-L564 form as best you can, but don't sign it. You'll need to submit proof of job-based health insurance." Before you leave the job, ask HR to sign the L564 on your last week and keep a copy. It is the cheapest insurance in this whole process.
If you missed your windows, there are two more forms. CMS-40B also works from January 1 to March 31 each year, with coverage and any late penalty that follow from waiting. Form CMS-10797 is the request for an "exceptional conditions" Special Enrollment Period, for situations Medicare lists on its sign-up page. Send either one to your local Social Security office by mail or fax.
A Utah checklist for the month before you apply
- Find your dates on our Turning 65 page. Your window opens 3 months before your birthday month; our post on when Medicare coverage starts shows how the month you apply sets the start date.
- Create your my Social Security account and confirm the birth date it shows is right.
- Find your birth certificate in case it is asked for. If you only have a hospital keepsake or a photocopy, order a certified copy now.
- Write down your employer plan dates, yours and your spouse's. If retirement is near, get the L564 signed before your last day.
- Plan the next step. The card starts your Medigap Open Enrollment clock when Part B begins; our post on Medigap Open Enrollment explains why that 6-month window matters in Utah.
I have walked people through Medicare sign-up for more than 22 years, and the stuck applications nearly always trace back to one missing piece: a photocopied birth certificate, or an employer form nobody signed. Get those two right and the rest is quick.
How we know all this: the Medicare On Main Data Desk frames every article with public data. Here that means Medicare.gov's sign-up pages (How do I sign up, Ready to sign up for Part A and Part B, When can I sign up), CMS forms CMS-40B (07/2025) and CMS-L564 (03/2025), and the Social Security Administration's Program Operations Manual System sections GN 00301.030, GN 00302.010, GN 00302.050 and HI 00805.005, all read October 16, 2026. This is education, not advice. Social Security decides what evidence it needs in your case; confirm with Social Security at 1-800-772-1213 or your local office, and compare coverage with a licensed agent. We take no payment from any carrier to feature a plan.
Frequently asked questions
What documents do I need to sign up for Medicare at 65?
Often just your Social Security number and the facts about you: date and place of birth, and the dates of any employer health plan you have now or will have. Social Security asks for proof of age only if your birth date is not already established in its records. Social Security's manual says people who proved their age when they got their Social Security number or filed an earlier claim "will not be required to resubmit evidence of age."
Do I need my birth certificate to apply for Medicare?
Sometimes. If Social Security has not already established your birth date, its manual tells staff to ask anyone under 73 for "a public or religious record of birth established before age 5." It must be the original or a copy certified by the office that issued it. Social Security will not accept a plain photocopy unless you show the original with it, and it does not accept electronically certified copies when it requires a certified document.
Am I automatically enrolled in Medicare at 65?
Only if you already get Social Security or railroad retirement benefits. Medicare.gov says that if you start benefits "at least 4 months before you turn 65," you get Part A and Part B automatically and your card arrives about 3 months before coverage starts. If you are not collecting benefits yet, nothing happens on its own; you contact Social Security to sign up.
What forms do I need to sign up for Part B when I retire after 65?
Form CMS-40B, the Part B enrollment request, and form CMS-L564, which your employer completes to show you had job-based coverage. Mail or fax both to your local Social Security office, or apply online. The L564 says your coverage "must not have ended more than 8 months ago." If the employer cannot fill in its section, Medicare.gov says to complete it as best you can without signing it and send other proof of the coverage.
How long does it take to get a Medicare card after applying?
Medicare.gov says Social Security mails a welcome package with your Medicare card "about 2 weeks after you sign up." You need the Medicare number on that card to join a Medicare Advantage or drug plan or buy a Medigap policy, so applying early in your enrollment window leaves time to choose coverage before your start date.
Sources
- Medicare.gov — How do I sign up for Medicare?: automatic enrollment "at least 4 months before you turn 65"; card "3 months before" coverage or "about 2 weeks after you sign up"; my Social Security account.
- Medicare.gov — Ready to sign up for Part A & Part B (forms CMS-L564, CMS-40B, CMS-10797): L564 Section B "as best you can, but don't sign it"; CMS-40B January 1 – March 31; CMS-10797.
- Medicare.gov — When can I sign up for Medicare?: the 8-month Special Enrollment Period and signing up the month before coverage ends.
- CMS — Form CMS-L564, Request for Employment Information (PDF, rev. 03/2025): "must not have ended more than 8 months ago."
- CMS — Form CMS-40B, Request for Enrollment in Medicare Part B (PDF, 07/2025): who uses the form; the employment and coverage dates it asks for.
- SSA POMS GN 00302.010 — Evidence of Established Age in SSA Records: no resubmitting proof of age already on file.
- SSA POMS GN 00302.050 — Evidence Required for Claimants Under Age 73: a birth record established before age 5.
- SSA POMS GN 00301.030 — Acceptability of Documentary Evidence: originals or custodian-certified copies.
- SSA POMS HI 00805.005 — Eligibility for SMI (Part B): citizenship or 5 years' permanent residence.
