Find a Hospital, Facility or Ancillary Provider

We are here to help

If you have any questions or would like help in finding a provider, please contact the OneCare (HMO D-SNP) Customer Service department toll-free at 1-877-412-2734, 24 hours a day, 7 days a week. We have staff who speak your language. TTY users can call 711.

All providers have access to language line interpreters.

Choose your CalOptima program

Choose your health network

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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)

Disclaimers

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