OneCare (HMO SNP)

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If you are a OneCare (HMO SNP) or OneCare Connect member and need help with mental health or substance use services, please call CalOptima Behavioral Health at 1-855-877-3885. TDD/TTY users can call 1-800-735-2929. This is a toll-free telephone number available 24 hours a day, 7 days a week.


All providers have access to language line interpreters.

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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_20WEB001_2020_A Accepted 9/29/19


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