2027 Medicare Advantage plans in California
Medicare Advantage availability is set county by county, unlike stand-alone Part D. 56 California counties have at least one 2027 plan, 1,398 county-level offerings in all — from 2 in Sierra County to 124 in Los Angeles County. Counties with no plan at all are not listed.
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2027 drug-by-drug coverage is not published by CMS yet. The drug lookup covers 2026, whose formulary is live.
- Alameda32
- Alpine4
- Amador10
- Butte5
- Calaveras4
- Contra Costa10
- Del Norte4
- El Dorado10
- Fresno42
- Glenn4
- Humboldt4
- Imperial17
- Inyo6
- Kern42
- Kings22
- Lassen2
- Los Angeles (CMS area 05200)124
- Los Angeles (CMS area 05210)120
- Madera41
- Marin23
- Mariposa10
- Mendocino4
- Merced18
- Modoc4
- Mono8
- Monterey10
- Napa8
- Nevada5
- Orange111
- Placer26
- Plumas6
- Riverside88
- Sacramento32
- San Benito5
- San Bernardino95
- San Diego85
- San Francisco46
- San Joaquin39
- San Luis Obispo17
- San Mateo26
- Santa Barbara8
- Santa Clara36
- Santa Cruz9
- Shasta5
- Sierra2
- Siskiyou4
- Solano10
- Sonoma13
- Stanislaus36
- Sutter7
- Tehama5
- Tulare21
- Tuolumne6
- Ventura33
- Yolo26
- Yuba8