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Schedule a virtual appointment with a HAP Medicare Expert

Have questions about Medicare?

How to enroll

When to enroll 

You can purchase a HAP Alliance Medicare Supplement plan at any time. The best time to purchase your policy is when you become eligible for Medicare and enroll in Medicare Part B. 

Ways to enroll 

There are several convenient ways to enroll in a HAP Medicare Supplement Plan. 



Call a licensed HAP Medicare sales representative at (833) 923-1797 (TTY:711). 

Office hours:
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)

At all other times, you may access our interactive voice recording system at the same number and leave your name and phone number. A HAP Medicare sales representative will return your phone call the next business day. Please do not share personal health information when you leave your message.

Attend a Medicare In-person Seminar or Webinar

Come to a free HAP Medicare in-person seminar or webinar to learn how to get the most of a Medicare plan, hear about the new benefits and ask questions.


Complete and mail your enrollment form to: 

HAP Medicare Sales Division
2850 W. Grand Blvd.
Detroit, MI 48202


2023 Medicare Supplement Enrollment Form

2023 Medicare Supplement Attestation Form

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

Contact Us

HAP Medicare Sales:
(800) 868-9885 (TTY: 711)
HAP Senior Plus®
(800) 801-1770 (TTY: 711)
HAP Senior Plus®(PPO)
(888) 658-2536 (TTY: 711)
Alliance Medicare Supplement:
(800) 873-7526 (TTY: 711)