Medicare plans
Medicare plans in California
394 Medicare Advantage plans are offered somewhere in California for 2027 (402 in 2026), 279 at a $0 premium. 55 of 58 counties have at least one, and 10 drug-only plans cover the state.
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Shopping for your own coverage? Use Medicare Plan Finder at medicare.gov or call 1-800-MEDICARE.
California at a glance
| Plans offered in the state | 2026 | 2027 |
|---|---|---|
| Advantage | 402 | 394 |
| Advantage at a $0 premium | 274 | 279 |
| Drug only | 12 | 10 |
Source: CMS Medicare Advantage and Part D landscape files, as of September 30, 2026. Publisher page
Source: CMS CY2026 Medicare Advantage and Part D landscape file, as of September 25, 2025. Publisher page
Counties in California
- Alameda County32 Advantage plans, 19 at $0
- Alpine County4 Advantage plans, 2 at $0
- Amador County10 Advantage plans, 6 at $0
- Butte County5 Advantage plans, 4 at $0
- Calaveras County4 Advantage plans, 3 at $0
- Colusa CountyNo Advantage plans
- Contra Costa County10 Advantage plans, 5 at $0
- Del Norte County4 Advantage plans, 3 at $0
- El Dorado County10 Advantage plans, 5 at $0
- Fresno County42 Advantage plans, 31 at $0
- Glenn County4 Advantage plans, 3 at $0
- Humboldt County4 Advantage plans, 3 at $0
- Imperial County17 Advantage plans, 11 at $0
- Inyo County6 Advantage plans, 5 at $0
- Kern County42 Advantage plans, 33 at $0
- Kings County22 Advantage plans, 17 at $0
- Lake CountyNo Advantage plans
- Lassen County2 Advantage plans, 1 at $0
- Los Angeles County124 Advantage plans, 103 at $0
- Madera County41 Advantage plans, 30 at $0
- Marin County23 Advantage plans, 13 at $0
- Mariposa County10 Advantage plans, 5 at $0
- Mendocino County4 Advantage plans, 3 at $0
- Merced County18 Advantage plans, 10 at $0
- Modoc County4 Advantage plans, 3 at $0
- Mono County8 Advantage plans, 6 at $0
- Monterey County10 Advantage plans, 5 at $0
- Napa County8 Advantage plans, 6 at $0
- Nevada County5 Advantage plans, 3 at $0
- Orange County111 Advantage plans, 93 at $0
- Placer County26 Advantage plans, 16 at $0
- Plumas County6 Advantage plans, 4 at $0
- Riverside County88 Advantage plans, 75 at $0
- Sacramento County32 Advantage plans, 21 at $0
- San Benito County5 Advantage plans, 3 at $0
- San Bernardino County95 Advantage plans, 82 at $0
- San Diego County85 Advantage plans, 68 at $0
- San Francisco County46 Advantage plans, 27 at $0
- San Joaquin County39 Advantage plans, 22 at $0
- San Luis Obispo County17 Advantage plans, 10 at $0
- San Mateo County26 Advantage plans, 16 at $0
- Santa Barbara County8 Advantage plans, 3 at $0
- Santa Clara County36 Advantage plans, 20 at $0
- Santa Cruz County9 Advantage plans, 4 at $0
- Shasta County5 Advantage plans, 4 at $0
- Sierra County2 Advantage plans, 1 at $0
- Siskiyou County4 Advantage plans, 3 at $0
- Solano County10 Advantage plans, 6 at $0
- Sonoma County13 Advantage plans, 6 at $0
- Stanislaus County36 Advantage plans, 20 at $0
- Sutter County7 Advantage plans, 4 at $0
- Tehama County5 Advantage plans, 4 at $0
- Trinity CountyNo Advantage plans
- Tulare County21 Advantage plans, 16 at $0
- Tuolumne County6 Advantage plans, 5 at $0
- Ventura County33 Advantage plans, 24 at $0
- Yolo County26 Advantage plans, 17 at $0
- Yuba County8 Advantage plans, 5 at $0
Source: CMS Medicare Advantage and Part D landscape files, as of September 30, 2026. Publisher page
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About this data
Plans, premiums, out-of-pocket maximums, and drug deductibles come from the CMS CY2027 Medicare Advantage and Part D landscape file. Change from 2026 compares it with the CY2026 landscape. Stars are the 2027 Star Ratings CMS released October 8, 2026: the overall rating for Advantage plans and the Part D summary rating for drug-only plans, which have no overall rating.
Advantage counts include Special Needs Plans, which are open only to people who qualify. Drug-only plans are listed by CMS for a whole state, so every county page shows them. Employer group plans are not in the file. This page lists plans; it does not say which plan fits anyone, and Rivvi does not sell plans.
Source: CMS Medicare Advantage and Part D landscape files, as of September 30, 2026. Publisher page
Source: CMS CY2026 Medicare Advantage and Part D landscape file, as of September 25, 2025. Publisher page
Source: CMS 2027 Medicare Part C and D Star Ratings, as of October 8, 2026. Publisher page