Effective January 1, 2024, Administration of Behavioral Health Services Will Transition to Health Net and Wellcare By Health Net

Beginning in January 2024, behavioral health services will no longer be administered by MHN, Health Net's behavioral health administrator. Instead, these services will be arranged by Health Net and Wellcare By Health Net. Members will not experience any changes to their behavioral health benefits as a result of this change.

Operational and administrative plan changes

Certain functions, such as eligibility and benefit checks, claims submission, referrals, prior authorizations, provider portal and websites, and more may be affected. Refer to the chart below for important details prior to and after January 1, 2024.

Operational Functions
Functions Prior to January 1, 2024 After January 1, 2024
Claim submission

For claims with overlapping dates of service (DOS), providers are advised to split the claim for end of year services. Submit 2 different claims.
MHN Claims
P.O. Box 14621 Lexington, KY 40512-4621

Payer ID: 22771

Phone: 800-444-4281

Fax: 877-719-4804
Medicare Claims:
Health Net Medicare Claims
PO Box 9030
Farmington, MO 63640-9030

Payer ID: 68069 

Commercial Claims:
Health Net Commercial Claims
PO Box 9040
Farmington, MO 63640-9040

Payer ID: 95567
Eligibility and benefit checks MHN website Health Net Oregon Provider Portal
Provider Services Phone: 844-966-0298 Medicare Phone: 888-445-8913 Option 2

Commercial Phone: 888-802-7001 Option 2
Provider Engagement/Relations   Email: OR.Prov.Reps@healthnet.com
Provider portal/website MHN website Secure portal: Health Net Oregon Provider Portal

Public website: Health Net Oregon website
Referral Contact the MHN Customer Service Department for a referral to an MHN provider.

Phone: 888-935-5966
Contact the Health Net Customer Service Department for a referral to a BH provider.

Medicare Phone: 888-445-8913

Commercial Phone: 888-802-7001
Prior Authorization Authorized by MHN

Phone: 888-935-5966
Authorized by Health Net

Medicare Phone: 800-672-5941

Commercial Phone: 888-802-7001
Provider Dispute Resolution MHN Appeals & Grievances
P.O. Box 10697
San Rafael CA 94912
Behavioral Health Provider Dispute Resolution Request Form (PDF)

Commercial Claim: Mail Claim Dispute form and attachments to:

Commercial Claim Disputes
PO Box 9040
Farmington, MO 63640-9030

Medicare Claim: Mail Claim Dispute form and attachments to:

Medicare Claim Disputes
PO Box 9030
Farmington, MO 63640-9030

Appeals based on medical necessity: Health Net Appeals & Grievances Medicare Operations P.O. Box 10450
Van Nuys, CA 91410-0450

Appeals not based on medical necessity:
Health Net Medicare Operations
7700 Forsyth Blvd
St. Louis, MO 63105
Provider Operations Manual MHN website Health Net Oregon website