Member Services
The Member Services team handles questions about your coverage, benefits, claims, and how your plan works.
Medicare Advantage Members
Imperial Health Plan of California
1-800-838-8271TTY: 711
Apr 1 – Sept 30: Mon–Fri, 8:00 AM – 8:00 PM PST
Individual & Family Members
Imperial Insurance Companies, Inc.
1-800-595-0619TTY: 711
Open Enrollment (Nov 1 – Feb 15): Mon–Fri, 5:00 AM – 5:00 PM PST
Small Group
Imperial Insurance Companies, Inc. New for 2027
Coming 2027TTY: 711
1-866-442-0001 for pre-launch inquiries
Enrollment
If you'd like to learn more about a plan or enroll, our Sales and Enrollment team can walk you through your options.
Medicare Sales & Enrollment
1-800-838-5914Schedule an appointment with a Sales Representative or Independent Agent.
Individual & Family Sales & Enrollment
1-866-442-0001For members and those shopping for Individual & Family coverage in Arizona, Nevada, Texas, and Utah.
Small Group Sales & Enrollment
Coming 2027Small Group coverage launching in Maricopa County, AZ and Tarrant County, TX. Contact information will be available at launch.
Mailing addresses
Note: Use the correct legal entity address based on your plan type. The new site will surface the right address automatically based on your selected location.
Medicare Advantage (CA)
Imperial Health Plan of California, Inc.
Attn: Membership Department
PO Box 60874
Pasadena, CA 91116
Fax: 626-380-9066
Individual & Family — Arizona
Imperial Insurance Companies, Inc.
PO Box 60567
Pasadena, CA 91116
Individual & Family — Nevada
Imperial Insurance Companies, Inc.
PO Box 60590
Pasadena, CA 91116
Individual & Family — Texas
Imperial Insurance Companies, Inc.
PO Box 61300
Pasadena, CA 91116
Individual & Family — Utah
Imperial Health Plan of the Southwest, Inc.
P.O. Box 60190
Pasadena, CA 91116
Are you a provider or broker?
Provider Services, agent support, and partner contacts have moved to their respective pages. Find what you need below.
Provider Services lines, prior auth, claims, and clinical program contacts.
Have a quick question?
Ask Imperial — our member assistant can answer common questions about your plan, benefits, and coverage.
Ask Imperial →Page last updated: September 11, 2026 at 12:00 PM PST (Build v5.7.170)
Medicare Advantage Plan Disclosures: Imperial Health Plan is an (HMO) (HMO SNP) with a Medicare Contract. Enrollment in Imperial Health Plan depends on contract renewal.
Imperial Health Plan of California (HMO) (HMO SNP) complies with applicable Federal civil rights laws and does not discriminate on the basis of race, color, national origin, age, disability, or sex. Imperial does not exclude anyone or treat them unfairly because of race, color, national origin, age, disability, or sex. ATTENTION: If you speak English, free language assistance services are available to you. Appropriate auxiliary aids and services to provide information in accessible formats are also available free of charge. Call 1-800-838-8271 (TTY: 711) or speak to your provider.
Individual & Family Plan Disclosures: Imperial Insurance Companies, Inc. and Imperial Health Plan of the Southwest, Inc. offer health insurance products through the ACA Health Insurance Marketplace in select states and are regulated by state Departments of Insurance and the federal Centers for Medicare & Medicaid Services where applicable.
For accurate plan information based on where you live, select your state and county. Plan availability, benefits, networks, premiums, and cost-sharing vary by line of business, state, and county. This information is not a complete description of benefits. Limitations, copayments, and restrictions may apply.