Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) | Last updated October 8, 2026
Blue Shield of California offers individual Medicare Advantage HMO plans in 16 California counties for 2027, plus Dual Special Needs Plans in Los Angeles and San Diego counties.
Blue Shield’s 2027 HMO counties: Alameda, Kern, Los Angeles, Merced, Orange, Placer, Riverside, Sacramento, San Bernardino, San Diego, San Joaquin, San Luis Obispo, San Mateo, Santa Barbara, Santa Clara and Stanislaus.
California has about 394 Medicare Advantage plans for 2027; Sharp and Providence are leaving their areas.
✔ Built on CMS 2027 data
✔ No-cost plan comparison


