General questions

For general questions about Blue Shield of California's Medicare Supplement Plans, Medicare Advantage - Prescription Drug Plans, and Medicare Prescription Drug Plans:

Phone: (855) 203-3874 (TTY: 711)

Hours: 8 a.m. to 8 p.m. seven days a week, from October 1 through March 31, and 8 a.m. to 8 p.m., weekdays from April 1 through September 30
 

Medicare program

For more information about Medicare plans and policies:

Phone: 1-800-MEDICARE (1-800-633-4227) [TTY: users can call (877) 486-2048]

Hours: 24 hours a day, seven days a week
 

Centers for Medicare and Medicaid Services

For more information about Center for Medicare and Medicaid Services:

Visit www.medicare.gov
 

Customer Service

Medicare Advantage Prescription Drug Plans

Members with a Medicare Advantage Prescription Drug Plan who want to know more about their plan should call:

Phone: (800) 776-4466 (TTY: 711)

Hours: 8 a.m. to 8 p.m., seven days a week
 

Dual Special Needs Plans

Members with any Dual Special Needs Plans (D-SNP) who want to know more about their plan should call:

Phone: (800) 452-4413 (TTY: 711)

Hours: 8 a.m. to 8 p.m., seven days a week
 

Medicare Prescription Drug Plans

Blue Shield Medicare Prescription Drug Plan members with questions about their prescription drug coverage should call:

Phone: (888) 239-6469 (TTY: 711)

Hours: 8 a.m. to 8 p.m., seven days a week

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Page last updated: 1/1/2025

*Free digital copy with no obligation to enroll.

† Blue Shield Medicare Advisers are available April 1 through September 30: 8 a.m. to 8 p.m., weekdays and October 1 through March 31: 8 a.m. to 8 p.m., seven days a week.

© California Physician’s Service DBA Blue Shield of California 1999-2025. All rights reserved.

California Physician’s Service DBA Blue Shield of California is an independent member of the Blue Shield Association.

Blue Shield of California 601 12th Street, Oakland, CA 94607.

For Blue Shield Medicare Advantage Plans: Blue Shield of California is an HMO, HMO D-SNP, PPO and a PDP plan with a Medicare contract and a contract with the California State Medicaid Program. Enrollment in Blue Shield of California depends on contract renewal.

 
 
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