Medicare Insurance

Get to know the basics of Medicare so you’re ready to make decisions with confidence.

Ibis has partnered with eHealth to help you find the coverage that may best fit your needs.

Understanding Your Medicare Options

Ibis Health has served the needs of Medicare beneficiaries since the program began and is included in both Original Medicare and many Medicare Advantage plans.

Need help finding the right solution? Contact either your licensed insurance agent specializing in Medicare coverage, your state-sponsored Medicare advisor organization, or our partners at eHealth by calling 855-400-7018 (TTY 711). eHealth is available Monday through Friday from 8 am to 9 pm EST. You can also visit eHealth’s website at

eHealthMedicare.com/Ibis_tablet, an online marketplace where you can research plans and benefits without sharing any personal information. 

eHealth is an independent insurance advisor that operates a non‑government website and employs licensed insurance agents who can help you understand your coverage options over the phone.

Medicare is divided into four main parts: A, B, C, and D.

To enroll in a Medicare Advantage (Part C) plan, you must have both Part A and Part B. To enroll in a Part D plan, you need at least Part A or Part B.

Important: Not all doctors accept Medicare Advantage plans. Once you’ve narrowed down your Medicare coverage options, and if having access to specific physicians is important to you, please contact the health plan directly to confirm that your preferred doctors are included in the plan’s network.

Medicare Supplemental Insurance—also called Medigap—is an additional insurance product that pays some of Medicare’s out‑of-pocket costs, such as copays and deductibles, and possibly other services not normally covered by Original Medicare. You must have Medicare Parts A and B to buy a Medigap policy. People with Medicare Advantage plans do not need and cannot use Medigap policies.

To enroll in Medicare, most people need to contact Social Security directly. It’s recommended you do this before your 65th birthday to avoid a lapse in coverage and avoid any penalties for applying late. You should receive a packet in the mail from Medicare before you turn 65. You can enroll online, in person at the Social Security office or by calling 800‑772-1213.

You have a seven‑month window around your 65th birthday to enroll; this is called your initial enrollment period. After that, you can still enroll in Medicare, but you may need to wait for a designated special/general enrollment period to do so. Learn more about the different enrollment periods:

Initial Enrollment Period

Medicare Special Enrollment Period

These occur based on certain life events, such as:

Medicare General Enrollment Period

Medicare Open Enrollment Period

Medicare Advantage Open Enrollment Period

Medigap Open Enrollment Period

This enrollment period is only for Medigap coverage.

*Information updated [Month Day], 2025.