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    OpenPayerToolsPayer Contact DirectoryKaiser Permanente

    Kaiser Permanente Contact Directory

    29 contact channels across 4 types (Email, Fax, Mailing Address, Phone) for claims, prior authorization, provider services, and more.

    Last verified Aug 25, 2026 from the payer's published directories.

    Phone

    10 rows

    ContactPurposeLine of BusinessHoursNotesSource
    808-432-7535Appeals DisputesCommercialMonday–Friday, 8 a.m.–5 p.m.Regional Appeals Office to appeal a denial of payment or authorization. - Regional Appeals OfficeView source
    877-875-3805Claims StatusCommercialMonday–Friday, 8 a.m.–4:30 p.m.Claims Customer Service to dispute a claim payment amount. - Claims Customer Service; dispute a claim payment amountView source
    844-343-9370Credentialing EnrollmentAllN/AMedical Services Contracting – facility/organizational provider credentialing, Northern California (alternate key contacts listing)View source
    925-924-5050Credentialing EnrollmentAllN/AMedical Services Contracting – facility/organizational provider credentialing, Northern CaliforniaView source
    808-432-5687Prior AuthorizationMedicaidN/AKaiser Authorization Department – Hawaii Plan referral phone for prior authorization/plan referralsView source
    800-651-2237Prior AuthorizationMedicaidN/AToll-free number - Prior Authorization – QUEST Integration (Hawaii Medicaid) Service Coordinator, toll-free line for prior authorizationView source
    432-5330Prior AuthorizationMedicaidN/APrior Authorization – QUEST Integration (Hawaii Medicaid) Service Coordinator, provider instructions for prior authorizationView source
    888-567-6847Prior AuthorizationCommercialN/APermanente Advantage – provider pre-certification phone, Mid-Atlantic States community providersView source
    877-895-2705Prior Authorization, Medical ManagementCommercialnormal business days and hours (Monday–Friday 8:00 a.m.–5:00 p.m.) | Monday–Friday 8:00 a.m.–5:00 p.m.Central Referral Center – Colorado; providers must contact Utilization Management to obtain referral authorization before services are rendered | Utilization Management Department / Central Referral Center – Colorado providersView source
    800-810-4766Prior Authorization, Medical ManagementCommercialMonday–Friday 8:00 a.m.–5:00 p.m.; providers instructed to call toll-free and collectUtilization Management Operations Center – Mid-Atlantic States; providers are instructed to call for pre-authorization (prompt 2), referrals (prompt 2), and hospital admissions (prompt 1) | Utilization Management Operations Center (UMOC) – Mid-Atlantic States providers; option 2 for providersView source

    Fax

    8 rows

    ContactPurposeLine of BusinessHoursNotesSource
    808-432-5433Appeals DisputesCommercialN/AFax for Claims Customer Service. - Claims Customer Service; dispute a claim payment amountView source
    877-228-8306Credentialing EnrollmentAllN/AMedical Services Contracting – general fax, Northern CaliforniaView source
    510-987-4138Credentialing EnrollmentAllN/AMedical Services Contracting – facility/organizational provider credentialing fax, Northern California (key contacts 2023)View source
    432-5260Prior AuthorizationMedicaidN/APrior Authorization – QUEST Integration (Hawaii Medicaid) Service Coordinator faxView source
    808-432-5691Prior AuthorizationMedicaidN/AKaiser Authorization Department – Hawaii Plan referral faxView source
    866-338-0266Prior AuthorizationCommercialN/APermanente Advantage – provider pre-certification request fax, Mid-Atlantic States community providersView source
    808-432-5667Prior Authorization, Appeals DisputesMedicaid, CommercialN/AAlternate fax | Fax for Regional Appeals Office. - Kaiser Authorization Department – Hawaii Plan referral alternate fax | Regional Appeals OfficeView source
    866-529-0934Prior Authorization, Medical ManagementCommercialnormal business days and hours (Monday–Friday 8:00 a.m.–5:00 p.m.) | Monday–Friday 8:00 a.m.–5:00 p.m.Central Referral Center – Colorado; fax for referral/authorization communications with Utilization Management | Utilization Management Department / Central Referral Center – Colorado providersView source

    Mailing Addresses

    8 rows

    ContactPurposeLine of BusinessHoursNotesSource
    Kaiser Foundation Health Plan, Inc., Attn: Regional Appeals Office, 711 Kapiolani Blvd., Suite 130, Honolulu, HI 96813Appeals DisputesCommercialN/AWritten inquiries, complaints, or appeals for Hawaii. - Hawaii; Regional Appeals Office / Member Relations address published in provider manualView source
    Kaiser Permanente Hawaii - Provider Appeals, Claims Administration Department, Attn: Provider Disputes, PO Box 378021, Denver, CO 80237-9998Appeals Disputes, Claims SubmissionCommercialN/AProvider disputes and appeals address for Hawaii claims administration department. | Claims mailing address listed for Hawaii. - Hawaii; Provider Disputes | HawaiiView source
    Kaiser Foundation Health Plan, Inc. National Claims Administration, 1800 Harrison Street, 12th Floor, Oakland, CA 94612Claims SubmissionCommercialN/AOther than U.S. Mail delivery location for emergency services claims. - Emergency services; other than U.S. MailView source
    Kaiser Foundation Health Plan, Inc. National Claims Administration, P.O. Box 12923, Oakland, CA 94604-2923Claims SubmissionCommercialN/APaper claims mailing address for emergency services provided to KFHP members. - Emergency services; U.S. MailView source
    Mid-Atlantic Claims Administration, Kaiser Permanente, P.O. Box 371860, Denver, CO 80237-9998Claims SubmissionCommercialN/AClaims mailing address listed for Mid-Atlantic. - Mid-AtlanticView source
    Medical Services Contracting, 5820 Owens Dr, Building E, Floor 2, Pleasanton, CA 94588Credentialing EnrollmentAllN/AMedical Services Contracting – contracting and credentialing office mailing address, Northern CaliforniaView source
    P.O. Box 23380, Oakland, CA 94623-2338Credentialing EnrollmentAllN/AMedical Services Contracting – credentialing/contracting mailing address, Northern California (key contacts 2023)View source
    Kaiser Permanente New Carrollton Administrative Office Building, Utilization Management Operations Center, 4000 Garden City Drive, Hyattsville, MD 20785Medical ManagementCommercialN/AUtilization Management Operations Center – administrative office mailing address (Mid-Atlantic States)View source

    Email

    3 rows

    ContactPurposeLine of BusinessHoursNotesSource
    KPHawaii.Appeals@kp.orgAppeals DisputesCommercialN/AEmail for Regional Appeals Office. - Regional Appeals OfficeView source
    mscprovcontractinbox@kp.orgCredentialing EnrollmentAllN/AMedical Services Contracting – provider contracting inbox, Northern CaliforniaView source
    MSCOPCRED@kp.orgCredentialing EnrollmentAllN/AFacility/Organizational Provider Credentialing – Northern CaliforniaView source

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

    More from Kaiser Permanente

    • Kaiser Permanente prior authorization
    • Kaiser Permanente coverage criteria
    • All Kaiser Permanente policy updates

    More from Kaiser Permanente

    • Kaiser Permanente prior authorization
    • Kaiser Permanente coverage criteria
    • All Kaiser Permanente policy updates

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    Sources

    Where this data comes from

    Every contact in this directory comes from documents the payers publish themselves, such as provider manuals, quick reference guides, and contact pages, and each payer page shows when its contacts were last verified. You can see all of our data sources and how we process them.

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