Contact Us

Claims issues: 1-800-444-4281
Appeals of denied authorizations or claims: 1-888-426-0028

Authorizations, referrals, customer service:

• California members: 
  • HN Medi-Cal: 1-800-675-6110
  • CalViva: 1-888-893-1569
  • CHW: 1-877-658-0305
  • Medicare: 1-800-646-5610
  • UC: 1-800-663-9355
  • All Other CA Members: 1-888-426-0030
• Oregon members: 1-800-977-8216

For all other issues, call the number on your ID card or call 1-888-327-0010.

Go to the MBH section of this website for details.

Please visit the Provider Portal for provider contact information.

MHN
P.O. BOX 989730
WEST SACRAMENTO, CA 95798-9730
1-800-327-2133

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