Applying for enrollment in MedStar Medicare Choice is easy

This online enrollment application can be used to apply for enrollment in a MedStar Medicare Choice plan. If you have any questions during the enrollment process, please call us toll-free at 855-242-4870 from 8 a.m. to 8 p.m., seven days a week.* TTY/TDD users should call 855-250-5604. Medicare beneficiaries may also enroll in Medstar Medicare Choice through the CMS Medicare Online Enrollment Center located at

Please note: The Medicare Annual Election Period runs from October 15 through December 7. Most Medicare beneficiaries can only enroll, or switch their Medicare Part C and Part D coverage during the Annual Election Period.

If you are newly enrolling in Medicare, you have the 3 months before, the month of and 3 months after your 65th birthday to enroll.

There may be other situations that would allow you to enroll in Medicare or change your Medicare Advantage plan. Call us at the phone number above for questions about your enrollment eligibility.
Before you start your online enrollment, make sure you:
  • Meet the eligibility requirements

    Eligibility Requirements


    To be eligible for a MedStar Medicare Choice Medicare Advantage plan, you must:

    • Reside in the MedStar Medicare Choice service area, which includes the following state and county: Washington, District of Columbia
    • Be entitled to Medicare Part A and enrolled in Medicare Part B
    • Continue to pay your Medicare Part A or B premiums as applicable
    • Not have End Stage Renal Disease (ESRD)
    for enrolling in a MedStar Medicare Choice Medicare Advantage plan.
  • Have your Medicare card or letter from the Social Security Administration or Railroad Retirement Board handy.
  • Disable pop-up blockers on your computer.
  • Have Windows/Internet Explorer.
Choose the MedStar Medicare Choice plan you would like to enroll in below.
If you get extra help in paying for your Medicare prescription drug coverage, your plan premium will differ. Review the list below for actual plan premiums.
Plan Name Monthly Plan Premium
2014 MedStar Medicare Choice (HMO) Plan
This plan also includes brand-name and generic prescription drug coverage. It is ideal for people who want basic healthcare coverage for no additional premium other than the Medicare Part B premium.
You must continue to pay your Medicare Part B premium.

Click here for a list of additional plan documents and forms.


Call us toll-free: 855-242-4870
TTY/TDD: 855-250-5604
Hours: 8 a.m. to 8 p.m., seven days a week.*