You Can Report Fraud or Abuse

Compliance and Ethics Hotline 1-855-507-1805 (TTY 711)

Call us

If you see any activity that you think is fraud or waste, we strongly encourage you to call our Compliance and Ethics Hotline at 1-855-507-1805 (TTY 711). You can also report the activity using CalOptima Health’s Compliance and FWA Reporting form.

You do not have to give your name to report fraudulent activity.

Complete the Compliance and Fraud Waste, and Abuse Reporting Form The confidential form has instructions on how to fill it out and where to send it.

OneCare Customer Service
You can contact us online or by phone, 24 hours a day, 7 days a week.
1-877-412-2734 Toll-free
711 TTY
Sign Up for OneCare
1-877-412-2734 Toll-free
711 TTY

Enrollment information

Visit Us

Visit our office Monday through Friday from 8 a.m. to 5 p.m.
Walk-ins welcome.
We are closed on certain holidays.
Address, map and directions
We speak your language
Request interpreter services

New OneCare Members

Frequently asked questions
Get quick answers to common questions about OneCare
New Member Orientation
Come to a meeting to learn about your new benefits

Pharmacy

About the OneCare pharmacy program
Learn about your drug benefits
Medication Therapy Management
This program gives you tools to get the most from your drugs

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

H5433_25WEB001_M_2025 (Accepted 9/17/2024)

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