Will I be enrolled automatically?
Yes, if you've been getting Social Security or Railroad Retirement Board benefits for at least four months before you turn 65. Your Medicare card arrives about three months before your birthday month. If you're still covered at work and don't want Part B yet, follow the instructions in the package to turn it down.
Many Oklahomans aren't enrolled automatically because they wait past 65 to claim Social Security. If that's you, you have to apply.
How to apply
- Apply online. Go to ssa.gov/medicare/sign-up. It's usually the fastest way, and you can sign up for Medicare without starting retirement benefits.
- Or call. Social Security's national line is 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m.
- Or visit an office. Use the Social Security office locator to find the office that serves your ZIP code and schedule an appointment before you go.
- Apply early. Apply about three months before your 65th birthday month so your coverage starts on time.
When coverage starts
Your Initial Enrollment Period lasts seven months: the three months before your birthday month, the month itself, and the three months after. If you sign up before your birthday month, coverage starts the first day of that month. If you sign up during or after it, coverage starts the month after you sign up. In 2026 the standard Part B premium is $202.90 a month. See when should I sign up if I'm turning 65.
What's different in Oklahoma
- Help paying premiums. If your income is limited, the Medicare Savings Programs can pay your premiums. OKDHS says you can visit or call your OKDHS Human Services Center to apply, and decisions come by mail in 30 to 60 days. See Medicare Savings Programs in Oklahoma.
- State, education and local government retirees. If you have HealthChoice coverage through EGID (part of the Oklahoma Health Care Authority) or retiree coverage through OTRS, check your plan's Medicare rules before you delay or decline Part B. See state and teacher retirees and Medicare.
- Choosing coverage. Once you have Parts A and B, you choose Original Medicare (with Part D and maybe Medigap) or a Medicare Advantage plan. CMS data show 50 Medicare Advantage plans open to everyone in Oklahoma for 2027, and choices differ by county.
Get help
Once you have Medicare, a licensed insurance agent who works with Benefits Life can help you compare Medicare Advantage, Medigap and Part D plans from the companies they work with, at no cost to you. You can request a call from a licensed insurance agent, or see plans for your ZIP code. For the full sign-up calendar, see Medicare enrollment periods.
Related questions
Do I need Part B if I'm still working at 65?
When job-based coverage lets you wait.
What are the Medicare deadlines for 2027?
Every date on one calendar.
Do I have to pay a premium for Part A?
Most people don't. Here's who does.
Sources
- Social Security — Sign up for Medicare
- Medicare.gov — When does Medicare coverage start?
- Medicare.gov — Avoid late enrollment penalties
- Social Security — Contact Social Security by phone
- Oklahoma Human Services — Help with Medicare Part A and B premiums
- CMS — CY2027 Medicare Advantage and Part D Landscape files
More questions in this guide
- Do I need Medicare Part B if I'm still working at 65?
- What are the Medicare deadlines in Oklahoma for 2027?
- What happens to my Medicare plan if I move to Oklahoma?
- When should I sign up for Medicare if I'm turning 65 in Oklahoma?
Part of the guide: Medicare enrollment periods in Oklahoma · All questions
Frequently asked questions
Do I sign up for Medicare with the State of Oklahoma?
No. Medicare is a federal program, and Social Security enrolls you in Parts A and B. Oklahoma Human Services (OKDHS) and the Oklahoma Health Care Authority (OHCA) handle SoonerCare and the programs that help pay Medicare premiums, but they don't enroll you in Medicare itself.
What if I'm under 65 and get disability benefits?
Social Security enrolls you automatically after you've received disability benefits for 24 months. People with ALS are enrolled the month their disability benefits start. People with end-stage renal disease apply through Social Security.
What happens if I miss my sign-up window?
You can sign up during the General Enrollment Period, January 1 to March 31, and coverage starts the month after you sign up. You may owe a Part B late penalty of 10% for each full 12 months you could have had Part B but didn't, unless job-based coverage let you wait.
Medicare in your Oklahoma county
Plans, local agents and help, county by county: Oklahoma · Tulsa · Cleveland · Canadian · Comanche · Rogers · Wagoner · Payne · Pottawatomie · Creek · Muskogee · Garfield · Grady · Washington · Logan · Bryan · Le Flore · Carter · Cherokee · McClain · All 77 counties →
