Contact Us

Important Contact Information


Press Option 3 for direct Provider Service Representative

Representatives are available Monday - Friday 8:00 AM to 5:00 PM PST. Please refer to the following information for provider assistance. Note that most issues can be handled via our online tools, by emailing or by submitting an electronic Contact Us form.

Address Changes, Practitioner

Please review your current provider profile by logging on and going to the "My profile" section. Most changes to your profile can be submitted using the online update tools.

After Hours Services

All calls made to MHN after business hours "roll over" to our After Hours unit. Intake and clinical after hours staff are available 7 days a week, 24 hours a day for pre-certification, authorizations or crisis triage.

Issue Inquiries and Provider Appeals

Administrative Claims Denial Inquiry:

Claims Research and Review
P.O. Box 989730
West Sacramento, California 95798

Formal Provider Dispute (for utilization management or administrative claims issues):

MHN Provider Appeal/Dispute
P.O. Box 989882
West Sacramento, CA 95798-9882

**For urgent member appeals process, see Section 12.D of the provider manual

Claims Address:

MHN Claims
P.O. Box 14621
Lexington, KY 40512-4621

Claims Inquiries:

(800) 444-4281
8:00 AM - 5:00 PM Pacific
Monday - Friday

If you have questions about a specific claim, please fill out and submit the Research and Review Form.

Complaints, Member

Contact custom benefit access number listed on member ID card.

Credentialing Status Look Up

Fraud and Abuse Hotline

(800) 327-0566

Intake, Care Management, Member Services Group Access Lines

Contact custom benefit access number listed on member ID card.

Provider Relations

Join Our Network

For other inquiries, please email us at or please submit an online form.

Mailing address:
MHN Provider Relations
P.O. Box 9103
Van Nuys, CA 91409-9103

Website Issues

If you are having technical difficulties with the Provider Portal, please contact us using the online form.