
How do I sign up for Medicare? Agent Broker Help
When do you sign up for Medicare? Your Initial Enrollment Period begins three months before you turn 65 and extends three months after. This creates a seven-month sign-up window for Medicare. Missing this timeframe can result in late enrollment penalties that affect your premiums for life.
You might still be working, collecting Social Security, or navigating special circumstances. Understanding how to sign up for Medicare requires knowing the rules for each situation. To name just one example, companies with 20 or more employees may allow you to delay enrollment. But is it mandatory to sign up for Medicare at age 65 in other cases?
This piece walks you through the enrollment process. We cover when to sign up for Medicare if still working and how to sign up for Medicare online. Our licensed independent agent-brokers can provide free assistance throughout your Medicare trip.
Understanding Your Medicare Eligibility and Initial Enrollment Period
Medicare eligibility depends on several factors, not just reaching age 65. You become eligible for Medicare if you’re 65 or older, under 65 with specific disabilities, or have certain qualifying medical conditions, whatever your age [1].
When Can You Sign Up for Medicare
Most people qualify for the first time when they turn 65. You’re eligible to sign up for Part A and Part B starting three months before you turn 65 and ending three months after the month you turn 65 [1]. This age-based eligibility applies whether you’re still working or already retired.
If you’re already receiving Social Security or Railroad Retirement Board benefits at the time you turn 65, you’ll be automatically enrolled in both Part A and Part B [1]. The government mails your Medicare card three months before your coverage starts [2]. If you’re not yet receiving these benefits, you must sign up actively during your enrollment window [1].
The 7-Month Sign-Up Window for Medicare
Your original enrollment period spans seven months total. It has the three months before your birth month, your birthday month itself, and the three months following [1][1]. If you turn 65 in June, your window runs from March 1 through September 30.
One detail often catches people off guard: if your birthday falls on the first of any month, Medicare treats you as turning 65 the month before [2]. So a June 1st birthday means your enrollment period runs from February 1 through August 31.
Your coverage start date depends on which month you enroll. Sign up during the three months before turning 65, and coverage begins the first day of your birth month [1]. Enroll during your birth month or the three months after, and coverage starts the first of the following month [2][1].
Is It Mandatory to Sign Up for Medicare at Age 65
Medicare is not mandatory [3]. While most eligible people enroll, you can delay or even decline coverage under specific circumstances.
If you’re still working at 65 and have employer-sponsored health insurance from an employer with 20 or more employees, you can delay enrolling without penalties [3]. Medicare recognizes this employer coverage as credible, allowing you to postpone Part B enrollment and avoid the monthly premium.
The rules change with smaller employers. If your employer has fewer than 20 employees, you need to take Medicare Parts A and B because Medicare becomes your primary insurance [3]. Your employer plan may pay less or nothing at all if you don’t enroll [3].
Declining Medicare altogether gets complicated. If you choose to opt out, you’ll lose all Social Security or Railroad Retirement Board benefits and must return all payments you’ve received [3]. This makes outright refusal impractical for most beneficiaries.
Sign Up for Medicare Before 65 (Disability and Special Cases)
You don’t have to wait until 65 if you have certain disabilities or medical conditions. After receiving Social Security Disability benefits for 24 months, you become eligible for Medicare [1][2]. Disabled individuals are enrolled in Parts A and B after this 24-month period automatically [1].
ALS patients receive eligibility right away. If you have Amyotrophic Lateral Sclerosis, you can get Medicare as soon as you start receiving Social Security Disability Insurance or Railroad Retirement Board disability benefits [2][2]. There’s no 24-month waiting period [2].
End-Stage Renal Disease creates another early eligibility path. You can get Medicare three months after regular dialysis begins or after a kidney transplant, generally [4]. Like ALS patients, people with ESRD don’t have to collect benefits for 24 months to qualify [4][2].
How to Sign Up for Medicare for the First Time
Social Security Administration handles enrollment for Medicare Part A and Part B [5]. The process differs depending on whether you’re already receiving benefits or applying for the first time.
Sign Up for Medicare Online Through Social Security

Online enrollment provides the quickest way to sign up for Medicare [1]. You’ll create a secure My Social Security account at www.ssa.gov to complete your application [1]. The online system lets you apply for both Medicare Parts A and B together, or Part A only if you prefer [6].
The online application walks you through the whole process if you’re 65 or older and want to enroll in Parts A and B or Part A only [6]. The website also handles Part B enrollment for those who already have Part A and are losing job-based coverage [1]. You’ll need your employer to complete form CMS-L564 and submit it to your local Social Security office by fax or mail in the following cases [1]:
You can sign up for Medicare even if you don’t plan to retire at age 65 [7]. The online system separates Medicare enrollment from retirement benefits and lets you get health coverage while continuing to work.
Enroll by Phone or In-Person
Call Social Security at 1-800-772-1213 to enroll over the phone [6]. Representatives are accessible Monday through Friday, 8 a.m. to 7 p.m. in most U.S. time zones, and they speak English and Spanish [6]. TTY users can call 1-800-325-0778 if they’re deaf or hard of hearing [6].
You can also visit your local Social Security office in person. An appointment beforehand helps you avoid delays and waiting in line [3]. Call the same number to schedule your visit [3].
Railroad workers follow different rules. Contact the Railroad Retirement Board at RRB.gov or call 1-877-772-5772 if you or your spouse worked for a railroad [1]. TTY users can reach them at 1-312-751-4701 [1].
Automatic Enrollment: Do You Have to Sign Up for Medicare at 65

You don’t need to do anything to sign up if you’re already receiving Social Security or Railroad Retirement Board benefits at least 4 months before turning 65 [8]. The government enrolls you in both Part A and Part B [8].
Your welcome package arrives in the mail 3 months before your coverage starts [8]. This package has your Medicare card with your Medicare Number [1]. Follow the instructions on the card and send it back if you don’t want Part B [9]. Keep the card, and you keep Part B, along with the premium obligation [9].
Disability beneficiaries become eligible for Medicare after receiving benefits for 24 months [8]. ALS patients are enrolled immediately upon the onset of disability benefits [8].
Sign Up for Social Security and Medicare Together
You can sign up for Medicare at the same time if you’re applying for Social Security retirement benefits at age 65 or later [10]. The online application at www.ssa.gov takes care of both applications together [7].
This combined approach makes sense if you’re ready to retire. Social Security then deducts your Part B premiums from your monthly benefit payments [11]. You’ll pay Medicare premiums yourself if you’re not yet receiving Social Security [11].
Call James O’Neal to learn more about which enrollment method works best for your situation and to get help navigating the application process.
Enrolling in Different Medicare Parts

Each Medicare part has its own enrollment process. Once you understand the differences, you can add coverage that fits your healthcare needs.
How to Sign Up for Medicare Part A and B
Part A and Part B enrollment happens through Social Security, not Medicare.gov [12]. You need to contact Social Security to sign up for either or both parts [13]. If you already have Part A and want to add Part B, you can apply online at Social Security’s website [13].
The General Enrollment Period runs from January 1 to March 31. You can sign up at this time if you missed your original enrollment period [13]. Your coverage will start July 1, and you might face late enrollment penalties [14]. A Special Enrollment Period allows Part B enrollment without penalties for those ending employer group health plans if your coverage ended within the last 8 months [15].
Sign Up for Medicare Part B Online
If you already have Part A and need to add Part B, the online application through your my Social Security account provides the quickest path [2]. You’ll sign the application and need to provide an email address [2].
The process requires two forms: CMS-40B Application for Enrollment in Medicare Part B and CMS-L564 Request for Employment Information [16]. Your employer must complete the L564 form to verify your group health plan coverage [16]. If your employer can’t complete it, submit alternative proof like pay stubs that show health insurance deductions or W-2s that reflect pre-tax medical contributions [2].
State when you want Part B coverage to begin in the remarks section [2]. Upload these documents through your Social Security account, or fax or mail them to your local Social Security office [2].
Sign Up for Medicare Part D (Prescription Drug Coverage)
You must have Part A or Part B to join a Part D plan [17]. Enroll on medicare.gov, by calling a Part D plan, or by calling 1-800-MEDICARE [18].
Part D comes in two forms. You can join a standalone Medicare drug plan if you have Original Medicare, or get drug coverage through a Medicare Advantage Plan that has prescription benefits [17]. Joining a separate drug plan while in an HMO or PPO will disenroll you from your Medicare Advantage Plan and return you to Original Medicare [17].
Medicare Advantage Plan Enrollment After Original Medicare
You need both Part A and Part B before enrolling in Medicare Advantage [1]. You can join any Medicare Advantage plan once you have both parts during your original enrollment period [19]. Coverage starts the month after the plan receives your request [19].
Call James O’Neal to Learn More about Medicare Advantage options in Alabama, Arizona, Arkansas, California, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Mexico, New York, North Carolina, Ohio, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Washington D.C., Washington, and Wisconsin.
Special Enrollment Situations and Sign Up Dates for Medicare

When to Sign Up for Medicare If Still Working
Working past 65 changes your enrollment timeline. You can delay Part B enrollment without penalties if your employer has 20 or more employees [20]. Your employer plan pays first as primary insurance. Medicare serves as secondary coverage [21].
But employer size determines payer order. Medicare becomes primary even if you have fewer than 20 employees [20]. Your employer plan may pay little or nothing if you don’t enroll in Part B [20]. Take Parts A and B at the time you turn 65 in these cases.
Delaying Medicare Enrollment with Employer Coverage
Creditable employer coverage based on current employment qualifies you to delay enrollment [22]. You can sign up for Part B anytime while covered by your employer or union group health plan, or within 8 months after employment ends or coverage stops, whichever happens first [22].
COBRA and retiree plans don’t count as current employment coverage [20]. These won’t qualify you for a Special Enrollment Period when they end [23]. You’ll need to enroll during the General Enrollment Period instead and may face penalties.
Special Enrollment Period for Medicare
Two types of Special Enrollment Periods exist. An 8-month Special Enrollment Period applies at the time you lose creditable employer coverage [24]. You get the full eight months to enroll in Parts A and B, but only the first two months to add Part C or Part D without penalties [24][25].
A 2-month Special Enrollment Period applies to qualifying life events like moving out of your plan’s service area, losing Medicaid, or gaining Extra Help [24][14]. These allow switching between Medicare Advantage or Part D plans.
General and Annual Enrollment Periods
The General Enrollment Period runs January 1 through March 31 each year [26]. You can sign up for Parts A or B if you missed your original Enrollment Period and don’t qualify for a Special Enrollment Period [26]. Coverage starts on July 1, and you’ll pay a 10% late-enrollment penalty for each 12-month period you delay [6].
The Annual Enrollment Period occurs October 15 to December 7 [14]. You can switch between Original Medicare and Medicare Advantage, change plans, or add Part D coverage at this time [14]. Changes take effect January 1.
How Licensed Independent Agent-Brokers Can Help You

Free Professional Guidance for Medicare Enrollment
Licensed independent agent-brokers provide enrollment assistance at no cost to you [27]. Insurance companies compensate brokers through commissions. You pay the same premium whether enrolling directly or through an agent [9]. Our education-first approach means we explain Medicare Advantage, Medigap, and Part D options before recommending specific plans [28]. We ask about your prescription drugs, chronic conditions, preferred doctors, and budget to match you with appropriate coverage [28].
Comparing Medicare Plans in Your State
Independent brokers contract with multiple insurance carriers to compare benefits, premiums, deductibles and provider networks in all available plans [29]. We analyze prescription formularies to verify your medications are covered and identify which pharmacies participate in each network [30]. This comparison service saves you from contacting dozens of companies individually [29].
Assistance with Dual Eligible and Special Needs Plans
Dual Special Needs Plans (D-SNPs) cover prescription drugs, dental, vision, and provide benefits for utilities, healthy foods, and transportation if you qualify for both Medicare and Medicaid [10]. We enroll you in these plans. Special Needs Plans tailor benefits for people with severe chronic conditions and provide care coordination with extra hospital days when needed [3].
Ongoing Support After Enrollment
Our relationship continues after enrollment. We help you with coverage changes, claims issues, plan navigation, and Medicare appeals [28]. We review your plan each year to prevent overpayment as circumstances change [29].
States and Cities We Serve
Call James O’Neal to Learn More about free agent broker guidance and help with Original Medicare options in Alabama, Arizona, Arkansas, California, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Mexico, New York, North Carolina, Ohio, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Washington D.C. and Washington. We serve residents in Las Vegas, Henderson, Phoenix, Los Angeles, Chicago, New Orleans, Indianapolis, Tampa, Atlanta, Houston, and many other cities. Like and follow us on Facebook and YouTube. Visit our Google Business and leave us a Five-Star Review.
Conclusion

Signing up for Medicare doesn’t have to feel overwhelming once you understand your enrollment windows and options. Mark your seven-month original Enrollment Period on your calendar to avoid penalties that can add up over your lifetime. You can enroll online through Social Security or by phone, and the important thing is to act within the right timeframe for your situation.
We’re here to guide you through every step of the Medicare enrollment process at no cost to you. Call James O’Neal to Learn More, and don’t forget to like and follow us on Facebook and YouTube, then visit our Google Business to leave us a Five-Star Review.
Key Takeaways
Understanding Medicare enrollment timing and options is crucial for avoiding penalties and securing proper healthcare coverage as you approach or pass age 65.
• Mark your 7-month enrollment window: Sign up begins 3 months before turning 65 and ends 3 months after your birthday month to avoid lifetime penalties.
• Working past 65 changes the rules: Employers with 20+ employees allow penalty-free Medicare delay; smaller employers require immediate enrollment.
• Enroll online through Social Security: Use ssa.gov for the fastest Part A and B enrollment, not Medicare.gov – automatic enrollment applies if receiving benefits.
• Get free professional help: Licensed independent agent-brokers provide no-cost guidance, plan comparisons, and ongoing support without affecting your premiums.
• Special situations have different timelines: Disability, ALS, and kidney disease create early eligibility, while losing employer coverage triggers special enrollment periods.
Missing your Initial Enrollment Period can result in permanent premium increases, making timely action essential for your financial and health security.
FAQs
Q1. Do I have to pay extra to work with a Medicare broker? No, there is no cost to you for using a Medicare broker. Brokers receive their compensation directly from insurance companies through commissions, so you’ll pay the same premium whether you enroll through a broker or directly with an insurance company. This means you can access professional guidance and ongoing support at no additional expense.
Q2. What happens after a Medicare broker helps me enroll in a plan? A reputable broker provides ongoing support well beyond your initial enrollment. They can assist with billing issues, help you understand your coverage, answer questions about claims, and review your plan annually to ensure it continues to meet your needs. Many brokers also help with plan changes during enrollment periods and serve as your advocate when dealing with insurance companies.
Q3. Should I use a local Medicare broker or a national one? Working with a local broker is generally recommended because they have in-depth knowledge of plans available in your specific area and can provide face-to-face assistance when needed. Local brokers understand regional provider networks, can meet with you in person, and often build long-term relationships with clients in your community, making ongoing support more accessible.
Q4. Can a Medicare broker help me with both Medicare Advantage and Medigap plans? Yes, licensed independent brokers can assist with both Medicare Advantage plans and Medigap supplement policies. They represent multiple insurance carriers and can compare different plan types to help you choose the coverage that best fits your healthcare needs, budget, and preferred doctors. They’ll explain the differences between Original Medicare with supplements and Medicare Advantage plans.
Q5. Is it better to research Medicare plans myself or use a broker? While it’s possible to research and enroll in Medicare plans independently, using a broker can save considerable time and help you avoid costly mistakes. Brokers have expertise in comparing all available plans in your area, understanding complex coverage details, and identifying options you might not find on your own. However, doing some basic research beforehand helps you ask informed questions and make confident decisions.
References
[1] – https://www.gohealth.com/medicare/eligibility-enrollment/medicare-advantage-eligibility-enrollment/
[2] – https://www.ssa.gov/blog/en/posts/2024-10-17.html
[3] – https://www.medicare.gov/health-drug-plans/health-plans/your-health-plan-options/SNP
[4] – https://medicareadvocacy.org/medicare-info/medicare-coverage-for-people-with-disabilities/
[5] – https://www.ssa.gov/medicare
[6] – https://www.medicareinteractive.org/understanding-medicare/health-coverage-options/original-medicare-enrollment/medicare-part-b-late-enrollment-penalties
[7] – https://medicareadvocacy.org/eligibility-enrollment/
[8] – https://www.medicare.gov/basics/get-started-with-medicare/before-65
[9] – https://medicaresupp.org/medicare-agents-near-me/
[10] – https://www.anthem.com/medicare/medicare-advantage-plans/special-needs-plans
[11] – https://www.humana.com/medicare/medicare-resources/social-security-medicare-work-together
[12] – https://www.ssa.gov/medicare/sign-up
[13] – https://www.medicare.gov/basics/get-started-with-medicare/sign-up/ready-to-sign-up-for-part-a-part-b
[14] – https://www.aetna.com/medicare/understanding-medicare/medicare-enrollment-periods-what-to-know.html
[15] – https://www.ssa.gov/medicare/sign-up/part-b-only
[16] – https://triagecancer.org/how-to-enroll-in-medicare-part-b-after-you-turn-65
[17] – https://www.medicare.gov/health-drug-plans/part-d/basics/choose-coverage
[18] – https://cahealthadvocates.org/the-basics/enrolling-in-medicare-part-d-prescription-drug-coverage/
[19] – https://www.medicare.gov/basics/get-started-with-medicare/get-more-coverage/joining-a-plan
[20] – https://www.medicareresources.org/faqs/do-i-need-to-sign-up-for-medicare-at-65-if-im-still-working/
[21] – https://www.medicareinteractive.org/understanding-medicare/coordinating-medicare-with-other-insurance/job-based-insurance-and-medicare/job-based-insurance-when-you-turn-65
[22] – https://www.ssa.gov/help/iClaim_grpHealth.html
[23] – https://www.medicareresources.org/medicare-eligibility-and-enrollment/the-medicare-part-b-special-enrollment-period/
[24] – https://www.uhc.com/news-articles/medicare-articles/what-is-the-medicare-special-enrollment-period
[25] – https://www.uhc.com/news-articles/medicare-articles/special-enrollment-for-medicare-when-working-past-65
[26] – https://www.medicarerights.org/media-center/medicare-advantage-open-enrollment-and-general-enrollment-periods-underway
[27] – https://www.ncoa.org/article/what-is-a-medicare-broker-and-why-should-you-consider-talking-to-one/
[28] – https://medigapseminars.org/what-does-a-medicare-insurance-broker-do/
[29] – https://medigapseminars.org/do-i-need-an-insurance-agent-for-medicare/
[30] – https://www.retireguide.com/medicare/compare/medicare-broker-vs-agent/

