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MHSA Contacts

These are Mental Health Services Administrator (MHSA) services and phone numbers. 

Primary Care Physician Consultations with the MHSA

For: PCPs & RNs

Phone: 1-877-263-9870

Hours: 8 a.m.-5 p.m. Monday-Friday (voice mail messages will be returned within 1 business day)


1:1 non-emergent telephonic consultations with a Magellan psychiatrist including, but not limited to:

  • Psychotropic medication (e.g., dosage, side effects, reconciliation)
  • Dual medical / behavioral health diagnosis
  • Complex cases
  • Psychiatric consultations


MHSA Customer Service

For: Providers, members

Phone: 1-877-263-9952


  • Routine care, urgent/emergent care – 8 a.m.-5 p.m. Monday-Friday
  • Urgent/emergent only – 24/7, 365 days/year 


  • Eligibility/benefits/authorizations/claims
  • Emergent, urgent & routine provider/member support
  • 24/7, 365 day licensed clinical support

Providers/facilities interested in joining Magellan’s network, call 1-800-788-4005 or email

For referrals: Provider Directory

Confidential and Proprietary

The information provided herein is HAI’s proprietary information, which is provided to you pursuant to HAI’s Confidentiality Agreement with Blue Shield of California (“BSC”). This information is proprietary and confidential and shall not be disseminated to any health plan or healthcare organization other than BSC without HAI’s express written consent and must be returned to HAI upon request.