Make money work for you!

  • Home
  • Personal Finance
  • Budgeting
  • Shopping
  • Taxes

An Introduction to Medicare: Parts A, B, C, and D Explained

August 24, 2025 · Personal Finance

Photo-realistic, senior-friendly scene that visually introduces the section titled 'Key Enrollment Periods: When to Sign Up'.

Key Enrollment Periods: When to Sign Up

Timing is everything with Medicare. Enrolling at the right time ensures your coverage starts when you need it and helps you avoid lifelong penalties. There are several specific windows of time, called enrollment periods, for signing up.

Initial Enrollment Period (IEP): This is your first and most important chance to sign up. It is a 7-month period that starts 3 months before your 65th birthday month, includes your birthday month, and ends 3 months after. It is the ideal time to enroll in Parts A and B, and also to choose a Part C or Part D plan.

Special Enrollment Period (SEP): If you or your spouse are still working past 65 and have health coverage through that current job, you may be able to delay enrolling in Part B without penalty. When that employer coverage ends, you will get an 8-month Special Enrollment Period to sign up for Part B.

General Enrollment Period (GEP): If you missed your IEP and do not qualify for an SEP, you can sign up for Parts A and B during the General Enrollment Period, which runs from January 1 to March 31 each year. Your coverage would then start on July 1. You may have to pay a late enrollment penalty if you use this period.

Annual Open Enrollment Period (AEP): This is your yearly chance to review and change your coverage. It runs from October 15 to December 7. During this time, you can switch from Original Medicare to a Medicare Advantage plan, switch from one Medicare Advantage plan to another, or join, drop, or switch a Part D prescription drug plan. Changes you make take effect on January 1 of the following year.

Medicare Advantage Open Enrollment Period: This runs from January 1 to March 31. If you are already in a Medicare Advantage plan, this period allows you to switch to a different Medicare Advantage plan or switch back to Original Medicare (and select a Part D plan).

Keeping these dates in mind is a critical part of managing your healthcare. Mark your calendar for your Initial Enrollment Period—it is the smoothest on-ramp to your Medicare coverage.

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Share this article

Facebook Twitter Pinterest LinkedIn Email

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Latest Posts

  • protect your wallet from inflation 6 Bills That Changed After Trump Returned to Office
  • Amazon Are You Eligible For a Refund From Amazon? Find Out Here!
  • social security, income 7 Social Security Benefits That Will Change SOON
  • Risks, Emergency Fund New Bill Could Send $600 Tariff Rebates to Millions (See If You Qualify!)
  • credit card Medical Debt Relief: States That Act vs. States That Don’t

Related Articles

consumer stocks, reduce credit card depression

7 Consumer Stocks That Do Best During Inflation

According to the US Bureau of Labor Statistics, inflation in the United States reached a…

Read More →
credit cards for amazon purchases, cyber monday, money

10 Best Credit Cards to Use for Amazon Purchases

With millions of interesting things at your fingertips, it’s no wonder that people spend a…

Read More →
money mistake 2023 credit card, costly habits

Top 8 Money Mistakes Most People Make

Think back…How many money mistakes have YOU made in your lifetime? Money mistakes made in…

Read More →
Work From Home, change 2023

10 New Jobs That Pay You Daily (Anyone Can Do This!)

9. Language Line If you’re fluent in another language, you should turn this gift into…

Read More →
work from home

8 Work From Home Jobs That Require 0 Experience 

8. Proofreader If you have an eye for detail and are always keen on writing…

Read More →
risky jobs

5 Risky Jobs Where You Can Earn a Lot of Money

The thing about most dangerous jobs is that the pay often doesn’t come close to…

Read More →
A smartphone displaying a mobile payment app interface, with a physical wallet and cash visible nearby.

Navigating the Digital Wallet: A Senior’s Guide to Zelle, Venmo, and PayPal

Your Next Steps: Getting Started with Confidence Learning a new skill takes time, and the…

Read More →
A senior citizen reviews paperwork and a smartphone showing a website at a sunlit table.

Beyond Social Security: Other Government Benefits You May Qualify For

Your Path to a More Secure Retirement You’ve worked hard your entire life, contributed to…

Read More →
retirement contributions 2023

Ready to Max Out Your 401(k) in 2023? Here Are The Steps!

Don’t stick with the default savings rate Lots of employees are usually enrolled in their…

Read More →
The Money Place

Make money work for you!

Inedit Agency S.R.L.
Bucharest, Romania

contact@ineditagency.com

Explore

  • Subscribe
  • Unsubscribe
  • Newsletter
  • Terms and Conditions
  • Do not sell my personal information
  • Privacy Policy
  • Contact

Categories

  • Budgeting
  • Personal Finance
  • Shopping
  • Taxes

© 2025 The Money Place. All rights reserved.