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A3 is Contra Costa County's innovative approach to provide timely and appropriate mental and behavioral health crisis services to anyone, anywhere, at anytime in the county.

Get free emergency support

A3 Miles Hall Crisis Call Center: 833-443-2672

If you or someone you know is experiencing a behavioral health crisis, call our A3 Miles Hall Crisis Call Center.

The Call Center currently operates Monday – Friday, 8 a.m. – 7:30 p.m. and Saturday, 8 a.m. – 5 p.m.

For support outside these hours:

  • In an emergency, call 911
  • Contra Costa Crisis Center
    • Call 211 or 988
    • Text 'HOPE' to 20121
  • Under 18, call Seneca Mobile Response Team at 877-441-1089