Members and guests

Imperial Insurance Companies, Inc. (HMO) (HMO SNP) is a Medicare Advantage Prescription Drug Plan for people living in specific zip codes in Bexar, Collin, Comal, Dallas, Denton, El Paso, Harris, Hays, Tarrant, Travis, Williamson.

To join any of our Plan Benefit Packages (PBP)s, you must meet all of the following Requirements:

  • You live in our service area
  • You have both Medicare Part A and Medicare part B
  • You are a United States Citizen
  • You do not have End-Stage Renal Disease (ESRD), with limited exceptions

If you’re enrolled in a Medicare plan or enrolling for the first time, generally you can only enroll, switch plans, or disenroll from a plan during certain times of the year.

ICEP/IEP-D – Is the first time you can sign up for Medicare. You may join Medicare Parts A, B, C and D during this time. If you qualify by age, it starts 3 months before you turn 65, includes your birthday month, and ends 3 months later.

SEP – The timing of your SEP may vary, depending on your qualifying situation. For example:

  • While you have coverage from an employer
  • You move out of the area your current plan serves, OR
  • You enter, leave or live in a nursing home, OR
  • Your plan changes and no longer serves your area, OR
  • You get Extra Help with your Medicare prescription drug costs.

AEP – Runs each year from October 15 to December 7. During this time, Anyone with Medicare Parts A & B can switch to a Part C plan.

OEP – The Open Enrollment Period – sometimes called the Annual Election Period– runs each year from October 15 to December 7. During this time,

  • Anyone with Medicare Parts A & B can switch to a Part C plan.
  • Anyone with Medicare Part C can switch back to Parts A & B.
  • Anyone who has or is signing up for Medicare Parts A or B can join, drop or switch a Part D prescription drug plan.
  • Anyone with Medicare Part C can switch to a new Part C plan.

To join Imperial Health Insurance Value (HMO C-SNP) you must have been diagnosed with Diabetes, Chronic Heart Failure (CHF), and/or Cardiovascular Disorder(s).

To join Imperial Health Insurance Dual (HMO D-SNP) you must have both Medicare and Medicaid.

Anyone meeting the above qualifications are eligible to join. Once enrolled, members must receive all care from plan providers, except in the case of emergency or urgent care. If you obtain routine care from out-of-network providers, neither Medicare nor Imperial Insurance Companies, Inc. (HMO) (HMO SNP) will be responsible for the costs.

As a member if you have any question please call us at 1-800-838-8271 for English and Spanish and 1-800-708-5976 for Chinese.

Prospective Members

If you are interested in enrolling into Imperial Insurance Companies, Inc. you may do so in one of the following ways:

  1. Call us to enroll telephonically. Call 1-800-838-5648 and we will take your enrollment information over the phone.
  2. Call us to schedule a face-to-face appointment. Please call 1-800-838-5914 and we can schedule an appointment with an employed Sales Representative or Independent Agent.

And if you do not wish to make an appointment with one of our sales representatives, you may

  1. Download the attached enrollment form and submit it by fax 626-380-9066, Enrollment Form – [PDF, 801KB]
  2. Download the attached enrollment form and submit if by email
  3. Mail it to us at:

Imperial Insurance Companies, Inc.
Attn: Enrollment Department
PO BOX 60874
Pasadena, CA 91116

  1. On-line enrollment. Medicare beneficiaries may also enroll in Imperial Insurance Companies, Inc. through the CMS Medicare Online Enrollment Center located at

By accessing these links, you acknowledge that you have reviewed the Imperial Insurance Companies, Inc.  Summary of BenefitsDrug Formulary, and the Provider Search Function which are all provided within this website or by calling the Enrollment Department.

Quality Assurance Programs

Quality Assurance programs at Imperial Insurance Companies, Inc. address real-time review of medical operations and claims data to ensure our members are receiving safe and appropriate services. The focus of the program is on the medical needs of our members and services required in order to optimize one’s ability to function at the highest level of capacity. The program encompasses services provided by PCP’s, Specialists, Vendors, and Prescription Drugs. Should you have specific questions regarding the program, please contact us at 1-800-838-8271 TTY/TDD users should call 711 for additional information.

To read PDFs, you will need Adobe Acrobat Reader. You can download here.
To find out more about Imperial Health Plan of California (HMO) - (HMO SNP), including plan benefits, provider lookup or view member materials, click below.
If you would like to access Imperial Health Holdings Medical Group, click below or call direct at (626) 838-5100 or toll-free at (800) 497-5509