CareAdvantage Members

Ready to Join?

Learn more about the benefits of becoming a member of CareAdvantage.

New address or contact information?

If you move and/or change your contact information (phone number, email), you must tell both HPSM and either the San Mateo County Human Services Agency at 1-800-223-8383 or Social Security Administration at 1-800-772-1213. This will ensure that you continue to get important information about your Medi-Cal coverage status.

To report your new information with HPSM, you can log in to the Member Portal or call the number below if you need assistance.

Log in to the Member Portal

CareAdvantage Dual Eligible Special Needs Plan (D-SNP) 2025

Eligibility to Join CareAdvantage by Health Plan of San Mateo

To join CareAdvantage and remain a member, you must:

  • Live in San Mateo County
  • Have Medicare Parts A & B and
  • Have full-scope Medi-Cal through the Health Plan of San Mateo

Live in San Mateo County

If you move out of San Mateo County, you cannot stay in this plan. To find out what your other health care options are, call the San Mateo County Human Services Agency at 1-800-223-8383, Monday through Friday between 8:00 a.m. and 5:00 p.m. .

Medicare rules do not allow you to live outside of San Mateo County for more than six months in a row. If you are away longer, you will lose your CareAdvantage coverage. To keep your CareAdvantage plan up-to-date, call the CareAdvantage Unit.

Medicare and Medi-Cal

CareAdvantage is for people who have both Medicare parts A & B and Medi-Cal. If you lose your Medi-Cal for some reason, you must get it back within two months in order to remain a CareAdvantage member. If you are no longer eligible for Medicare parts A & B, your CareAdvantage coverage will end.

Don't lose your Medi-Cal

Has your address changed?  Report changes at mybenefitscalwin.org for fastest service or call San Mateo County HSA at 1-800-223-8383.

Report changes

For information, call a licensed CareAdvantage Medicare Specialist

Toll free: 1-888-252-3153 Local: 650-616-1500

TTY: 1-800-735-2929 or dial 7-1-1

Hours: Monday–Friday 9:00 a.m. to 6:00 p.m.

CareAdvantage Enrollment Form

CareAdvantage Dual Eligible Special Needs Plan (D-SNP) is a health plan that contracts with both Medicare and Medi-Cal to provide benefits of both programs to enrollees. Limitations and restrictions may apply. For more information, call the CareAdvantage Unit or read the CareAdvantage D-SNP 2025 Member Handbook.

Benefits and co-pays may change on January 1 of each year.

If you speak other languages other than English, language assistance services, free of charge, are available to you. Call 1-866-880-0606 (TTY: 1-800-735-2929 or dial 7-1-1). ( Download this statement in multiple languages.)

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Page updated November 1, 2024