What You Need Depends on Your Situation
For standard enrollment (turning 65, not working): Social Security number, proof of age and citizenship (birth certificate or U.S. passport), and a photo ID. That is all. Apply at SSA.gov in about 10 minutes.
If you delayed Part B because of employer coverage and are now leaving that coverage: all of the above plus Form CMS-L564 — the single most important document most people have never heard of. Without it, Social Security cannot verify your employer coverage was creditable and may assess a permanent Part B penalty. Get it from HR before your last day. Call (828) 761-3326. NC License #10447418.
The Stakes of Getting the Paperwork Wrong
Missing documents at enrollment can mean permanent penalties — these numbers are for 2026 and recalculate upward annually
Tier 1 — Documents for Medicare Parts A & B Enrollment
These four situations cover every Medicare Parts A and B enrollment scenario. Find yours, check the exact document list, and note what happens if each document is missing.
- Social Security number (not the card itself — just the number)
- Proof of age and citizenship: birth certificate or U.S. passport
- Proof of identity: driver’s license or state-issued photo ID
- If applying for Part B only (already have Part A): Medicare number from your card
Substitute a U.S. passport (accepted as equivalent proof of age and citizenship), a religious record of birth, or a U.S. consular report of birth abroad. Request a replacement NC birth certificate at vitalrecords.nc.gov. Do not delay enrollment while waiting for a replacement — visit your local SSA office to discuss alternatives.
- Social Security number
- Proof of age and citizenship: birth certificate or U.S. passport
- Proof of identity: driver’s license or state photo ID
- Form CMS-L564 (Request for Employment Information) — employer HR completes Section B
- Form CMS-40B (Application for Enrollment in Medicare Part B) — you complete this
- Letter from employer confirming coverage dates and that employer has 20+ employees
- Your Medicare number if Part A is already active (from your Medicare card)
Social Security cannot verify your employer coverage was creditable without CMS-L564. SSA may assess a permanent Part B late enrollment penalty — 10% per 12-month delay, forever. Get CMS-L564 from HR before your last day of employment, not after. Some HR departments take 4–8 weeks to respond after employees leave. A delay in getting the form can push you past the 8-month SEP window. Call (828) 761-3326. NC License #10447418.
- Usually none — enrollment is automatic after 24 consecutive months of SSDI
- Your Medicare card arrives by mail before your 25th month of SSDI
- ALS or ESRD: contact Social Security at 1-800-772-1213 immediately for expedited enrollment — these conditions qualify for immediate Medicare
- If enrollment questions arise: disability determination letter from SSA and your SSN
- Social Security number
- Proof of age and citizenship: birth certificate or U.S. passport
- Proof of identity: driver’s license or state photo ID
- Documentation of any prior coverage (employer plan, VA, TRICARE) — may reduce penalty calculation
- If you had employer coverage: CMS-L564 from HR — may eliminate penalty entirely if SEP applies
Part B: 10% per 12-month gap · at $185/mo standard premium: 1 year late = +$18.50/mo permanently, 3 years = +$55.50/mo permanently. Part D: 1% of $36.78 base per month without creditable coverage · permanent. Coverage does not start until July 1 regardless of when in Jan–Mar you enroll — up to 6 months without Part B after enrolling. Call (828) 761-3326. NC License #10447418.
Form CMS-L564 — Request for Employment Information
CMS-L564 is the form that proves to Social Security that your employer coverage was a qualifying employer group health plan during the period you delayed Medicare Part B. Without it, SSA has no way to verify your Special Enrollment Period eligibility — and may treat your enrollment as late, assessing a permanent 10% per 12-month penalty.
Who completes it: Your employer’s HR department fills out Section B. You fill out Section A. It asks for employment dates, group health plan coverage dates, and confirmation that the employer had 20 or more employees. Both sections must be completed before you submit to SSA.
Where to get the form: Download directly from CMS.gov or ask HR for it. It is a simple 2-page form.
Download CMS-L564 from CMS.gov or request it from HR before your last day of employment.
Complete Section A yourself — your name, Medicare number if you have it, and the period for which you’re claiming SEP.
HR completes Section B — employment dates, coverage dates, employer size confirmation. Allow time; some HR departments take weeks after you leave.
Submit with CMS-40B to Social Security — in person, by mail, or upload at SSA.gov. Do this within your 8-month SEP window. Call (828) 761-3326.
Tier 2 — Documents for Plan Enrollment After Parts A & B
Once your Medicare card arrives and Parts A and B are active, you enroll in a Medicare Advantage plan, Medigap, Part D, or a combination. The documents required are far simpler — but the Medigap timing is critical.
Medicare Advantage (Part C)
- Medicare number (from your red, white, and blue card)
- Part A and Part B effective dates
- Name, date of birth, address
- No government identity documents required beyond Medicare card
Part D (Standalone Prescription Drug)
- Medicare number from your Medicare card
- Part A and/or Part B effective dates
- Name, date of birth, address
- Current medications list (for plan comparison, not required for enrollment)
Medigap — During 6-Month OEP
- Medicare number from your Medicare card
- Part B effective date (confirms OEP is open)
- Name, date of birth, address
- No health questions, no medical records, no underwriting
- Any plan, any NC insurer — guaranteed acceptance
Medigap — After 6-Month OEP Closes
- Medicare number and Part B effective date
- Complete health questionnaire from insurer
- Medication list (all current prescriptions)
- Medical history (conditions, surgeries, diagnoses)
- Insurer may request medical records from your physician
Five Steps to Complete Medicare Enrollment with the Right Documents
In order — starting 4 months before your 65th birthday for the smoothest enrollment
Identify Your Situation
Determine which of the 4 situations applies. If leaving employer coverage, you need CMS-L564. If standard enrollment, just SSN, birth certificate, and ID. Call (828) 761-3326 to confirm. NC License #10447418.
Get CMS-L564 From HR If Needed
Request from HR before your last day. Allow at least 2 weeks for completion. Keep a copy. You cannot file a penalty-free SEP enrollment without it. Download from CMS.gov.
Apply at SSA.gov or SSA Office
Apply 3 months before your 65th birthday month for earliest coverage start. Online at SSA.gov takes about 10 minutes with correct documents. You can also apply by phone at 1-800-772-1213.
Enroll in Medigap When Part B Goes Active
Your Medicare card shows your Part B effective date. Your 6-month NC guaranteed-issue Medigap OEP opens that same day. Enroll in Medigap immediately — do not wait. NC has no birthday rule. Call (828) 761-3326.
Complete Part D Enrollment
Enroll in a Part D plan during the same window as Medigap. Even a $0-premium plan avoids the permanent Part D late enrollment penalty. Show your Medicare card and personal info to enroll.
CMS-L564 is the single most important document most people have never heard of. I’ve had clients retire, enroll in Part B two months later, and get hit with a permanent penalty because they didn’t have the form proving their employer coverage was creditable. HR had already moved on and took six weeks to respond. By then, Social Security had assessed the penalty — 10% per year, permanent, growing in dollar terms every January when CMS raises the standard premium.
Get CMS-L564 from HR while you are still employed. It takes HR five minutes to complete. It saves you from a penalty that lasts the rest of your life. (828) 761-3326. NC License #10447418.
If you need a replacement North Carolina birth certificate, request it from vitalrecords.nc.gov. Processing times vary. Do not delay your Medicare enrollment while waiting for a replacement — SSA accepts a U.S. passport, a religious record of birth, or other alternative documents as substitutes for a birth certificate. Visit your local Social Security office with the alternative document and explain the birth certificate is being requested.
Not Sure What Documents You Need? Free Checklist Review.
Rob confirms which documents apply to your specific situation, walks through CMS-L564 if needed, and reviews your timeline · NC License #10447418
Compare NC Medicare Plans Online
Once your Medicare card arrives, compare every Medigap, Medicare Advantage, and Part D plan available in your NC county side-by-side. Licensed broker tool — no lead form, no sales pressure.
Compare Plans — Your NC CountyTalk to Rob — Document Checklist
Rob identifies your enrollment situation, confirms which documents you need, walks through CMS-L564 requirements, and reviews your timeline before you apply. Same agent every call. NC License #10447418.
📞 Call (828) 761-3326Mon–Fri 9am–7pm · Sat 12pm–4pm 💬 Text Your Enrollment Situation 📅 Book a Free Document ReviewCMS-L564 Guidance
(828) 761-3326. Rob walks you through CMS-L564 from start to finish — what HR needs to complete, how to follow up if they are slow, and how to submit alongside CMS-40B to SSA for penalty-free SEP enrollment. NC License #10447418.
Enrollment Timeline Planning
Rob maps your exact document collection timeline against your IEP or SEP window — so CMS-L564 is in hand before your last day, Part B is filed within the SEP, and Medigap enrollment happens in the same month Part B goes active. NC License #10447418.
Medigap OEP Specialists
The day your Part B goes active, your 6-month guaranteed-issue Medigap window opens. Rob has all NC Medigap carriers compared and ready so you enroll in the right plan during the only window that never requires medical underwriting. NC License #10447418.
What documents do I need to sign up for Medicare?
For standard enrollment (turning 65, not working): Social Security number, proof of age and citizenship (birth certificate or U.S. passport), and a photo ID (driver’s license or state ID). If leaving employer coverage after 65: add Form CMS-L564 completed by HR and Form CMS-40B. Under 65 with disability: enrollment is usually automatic. Enrolling late during GEP: same as standard plus any prior coverage documentation. Call (828) 761-3326. NC License #10447418.
What is Form CMS-L564 and why do I need it for Medicare?
CMS-L564 is the Request for Employment Information form. It proves to Social Security that your employer coverage was a qualifying group health plan during the period you delayed Part B. HR completes Section B. Without it, SSA cannot verify your SEP eligibility and may assess a permanent 10% per 12-month Part B late enrollment penalty. Get it from HR before your last day of employment — some HR departments take weeks after you leave. Call (828) 761-3326. NC License #10447418.
Can I sign up for Medicare online?
Yes. Apply at SSA.gov in about 10 minutes with your SSN, birth certificate or passport, and ID. If enrolling under SEP after leaving employer coverage, you also need CMS-L564 and CMS-40B. You can also apply by phone at 1-800-772-1213 or in person at your local Social Security office. Apply 3 months before your 65th birthday month for the earliest possible coverage start. Call (828) 761-3326. NC License #10447418.
What documents do I need for Medigap enrollment?
During your 6-month guaranteed-issue Medigap OEP: your Medicare number, Part B effective date, name, date of birth, and address. No health questions, no medical records, no underwriting — guaranteed acceptance. After the OEP closes in NC: same documents plus a complete health questionnaire, medical history, and current medications. Insurers can deny coverage or charge significantly more based on health status. NC has no birthday rule. Call (828) 761-3326. NC License #10447418.
What happens if I am missing my birth certificate for Medicare enrollment?
Substitute a U.S. passport, a religious record of birth, or a U.S. consular report of birth abroad. To request a replacement NC birth certificate, visit vitalrecords.nc.gov. Do not delay enrollment while waiting — SSA accepts alternative documents. Visit your local SSA office to discuss alternatives if you do not have a passport or birth certificate readily available. Call (828) 761-3326. NC License #10447418.
Do I need documents to enroll in Medicare Advantage or Part D?
Enrolling in Medicare Advantage or a standalone Part D plan requires only your Medicare number, Part A and B effective dates, and basic personal information. No government identity documents beyond your Medicare card. Switching plans: old plan cancels automatically when new one starts. For Medigap during OEP: add your Part B effective date. For Medigap after OEP: add full health history and current medications. Call (828) 761-3326. NC License #10447418.