OneCare (HMO D-SNP)

How to Enroll

Do you want to sign up for OneCare?

We make it easy.

Enrolling in OneCare (HMO D-SNP) is simple and easy! You can download an enrollment form and mail it to the address below. For more information, please call OneCare Customer Service at the numbers below.

We are open Monday through Friday from 8 a.m. – 5 p.m., and closed certain holidays. To sign up for OneCare call 1-877-412-2734. TTY users can call toll-free at 711.

Print this application, to apply for OneCare and mail it to:

CalOptima Health
Attention: OneCare Customer Service
505 City Parkway West
Orange, CA 92868

Contact Us
Visit Us
New OneCare Members

To file a complaint with Medicare, click on the following link to complete a complaint form on the Medicare website: Medicare Complaint Form.

H5433_24WEB001_2024_A (Accepted 9/19/2023)


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