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What is Medicare Advantage Open Enrollment Period?

HAP is here, helping you understand your Medicare coverage options

Each year, you can join, switch or drop a Medicare Advantage Plan during the Annual Enrollment Period which happens from Oct. 15 to Dec. 7. When you choose a plan during this period, your plan will become effective on Jan. 1 of the following year.

If you are not satisfied with your Medicare Advantage plan in the new year, you can switch. You can now make one change during the Medicare Advantage Open Enrollment Period which happens between Jan. 1 and Mar. 31 each year. 

You can make these changes during the Medicare Advantage Open Enrollment Period:

  • If you have a Medicare Advantage plan (with or without drug coverage), you can switch to another Medicare Advantage Plan (with or without drug coverage). You can choose a different plan with your current health insurer or a new plan with a new health insurer.
  • You can drop your Medicare Advantage Plan and return to Original Medicare. You'll also be able to join a Medicare Prescription Drug Plan. 

During this period, you can't:

  • Switch from Original Medicare to a Medicare Advantage plan. 
  • Join a Medicare Prescription Drug plan if you're in Original Medicare.
  • Switch from one Medicare Prescriptions Drug plan to another if you're in Original Medicare. 

You can only make one change during the Medicare Advantage Open Enrollment Period. Any changes you make will be effective the first of the month after the plan gets your request. 

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Last updated 10/1/2021

Health Alliance Plan (HAP) has HMO, HMO-POS, PPO plans with Medicare contracts. HAP Empowered Duals (HMO SNP) is a Medicare health plan with a Medicare contract and a contract with the Michigan Medicaid Program. Enrollment depends on contract renewals.

This information is not a complete description of benefits. For more information call Medicare Michigan customer service at (800) 868-9885 (TTY: 711) 8 a.m. to 8 p.m., seven days a week (Oct. 1 – March 31) / 8 a.m. to 8 p.m., Monday through Friday (April 1 - Sept. 30).

HAP Senior Plus (HMO-POS), HAP Medicare MedicalAccess (HMO), HAP Senior Plus Henry Ford Tiered Access (HMO), HAP Medicare Connect (HMO), HAP Medicare Superior (HMO), Henry Ford Select (HMO), HAP Senior Plus (PPO), HAP Medicare Explore (PPO), HAP Medicare Prime (PPO), HAP Member Assist (PPO), HAP Medicare Diabetes and Heart (HMO C-SNP), and HAP CareSource™ MI Coordinated Health (HMO D-SNP) has a contract with Medicare. Enrollment depends on contract renewal.