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Medicare Enrollment Dates & Guidelines

September & October — Review & Compare Plans

  • Review plan notices for any upcoming changes.
  • Download Medicare & You 2025 for detailed information.
  • Use Medicare’s online tools in October to compare plans and find the best fit for your needs.

October 15 – December 7 — Open Enrollment Period

This is the only time of year when all Medicare beneficiaries can make changes to their health and prescription drug plans for the upcoming year. You can:
✅ Switch from Original Medicare to a Medicare Advantage Plan.
✅ Switch from a Medicare Advantage Plan back to Original Medicare.
✅ Change from one Medicare Advantage Plan to another.
✅ Join or switch a Medicare Prescription Drug Plan (Part D).
✅ Drop Medicare prescription drug coverage completely.

January 1 — New Coverage Begins

  • If you changed plans during Open Enrollment, your new coverage takes effect.
  • If you kept your existing plan, any updates to coverage, benefits, or costs will start.

January 1 – March 31 — Medicare Advantage Open Enrollment Period

  • If you have a Medicare Advantage Plan (HMO or PPO), you can switch to a different plan or return to Original Medicare (and enroll in a stand-alone Part D plan) once during this time.
  • Any changes made will take effect on the first day of the following month.

Medicare Supplement (Medigap) Enrollment

  • The best time to buy a Medigap policy is during your Medigap Open Enrollment Period—a six-month period starting on the first day of the month you turn 65 or older and are enrolled in Medicare Part B.
  • Some states may offer additional Open Enrollment Periods.
  • If you delay enrolling in Part B due to group health coverage, your Medigap Open Enrollment Period won’t begin until you sign up for Part B.
  • After this period, Medigap plans may be more expensive or unavailable.

Need Help with Enrollment?

We're here to assist you! Call us with any questions about Medicare enrollment.

📌 Information sourced from www.medicare.gov and Medicare & You.

By calling the number on this website, you'll be connected with a licensed agent.

Schedule a Consultation

Book a private phone, online, or Zoom meeting with a local Medicare agent at O’Neal Insurance Group. Get guidance on:
New to Medicare
Turning 65
Understanding 2025 Plans

Coverage Options:

  • Aetna Medicare
  • Humana Medicare
  • Devoted Health Medicare
  • BlueCross BlueShield of Illinois Medicare
  • AARP Medicare
  • UnitedHealthcare Medicare
  • Cigna Medicare
  • Clover Health Medicare
  • Essence HealthCare Medicare
  • Kelsey Care Medicare Advantage
  • Scan Health Medicare Plan
  • Select Medicare Health

📍 Available in: Alabama, Arizona, Illinois, Indiana, Louisiana, Mississippi, Missouri, Nevada, Texas, and Utah.

O'Neal Insurance Group

Las Vegas NV Chicago IL Medicare Health Plan Specialist Insurance Broker Agency
O’Neal Insurance Group is your local Las Vegas, Nevada, Individual and Family ACA, Obamacare, Dental, Vision, Hospital Indemnity, Critical Illness, ESRD, Cancer insurance, and Medicare health plan specialist broker agency with over 38 years of healthcare experience, licensed and certified, serving over 30 States, including Chicago, Illinois. We provide personal guidance in helping you compare, enroll, and educate you on all your individual and family healthcare options, including Medigap, Med Supplements, Medicare Advantage, and Part D Plan options. You can quote, compare, and enroll online 24 hours a day, 7 days a week, without the help of a pushy salesman at any time from the convenience of your home or office. You can also schedule a phone appointment, one-on-one and online, or a Mobile screen-sharing appointment at a convenient time.
3960 Howard Hughes Parkway
Suite 500 PMB 1939
Las VegasNevada 89169
(702) 763-8924
5113 S. Harper Ave
ChicagoIllinois 60615
(312) 348-7209
2953 Bienville Blvd # 303
Ocean SpringsMississippi 39564
(228) 641-2323
6068 US-98 #1 Suite 228
HattiesburgMississippi 39402
(601) 773-3933
We do not offer all plans available in your area. The information provided is limited to the plans we do offer. For a complete list of options, visit Medicare.gov or call 1-800-MEDICARE. This is a solicitation for insurance.
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