2027 Medicare Advantage Plans in California by County
This 2027 Medicare Advantage research resource provides statewide plan statistics and comparisons for California. Review plan counts, average premiums, out-of-pocket limits, CMS ratings, and enrollment-ranked plans organized by network type. For geographically specific coverage information, select your County using the directory below.
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California Medicare Advantage Plan Research and Facts
In 2027, Medicare beneficiaries in California can explore 259 Medicare Advantage plans (excluding Special Needs Plans), although availability varies by county. Of these plans, 176 offer a $0 monthly plan premium, while the statewide average premium is $20.78. The average maximum out-of-pocket (MOOP) limit is $3,128.34, and rated plans have an average CMS star rating of 3.69 out of 5. The sections below organize these plans by network type, with comparisons based on costs, ratings, and reported enrollment.
Enrollment figures reflect reported beneficiary participation and should not be interpreted as a measure of plan quality or suitability. Enrollment is influenced by factors such as local plan availability, market competition, and historical participation. Higher enrollment does not necessarily indicate a better plan.
Most-Enrolled PPO Plans in California
For 2027, California has 16 PPO Medicare Advantage plans, including 4 with a $0 monthly plan premium. The average monthly premium is $69.93, and the average maximum out-of-pocket (MOOP) limit is $5,650.13. Among rated PPO plans, the average CMS star rating is 4 out of 5. The following table identifies up to 10 PPO plans with the highest reported statewide enrollment.
| Provider | Plan ID | Plan Name | Premium | MOOP | Stars | Enrollment |
|---|---|---|---|---|---|---|
| Humana | H5525-084-0 | HumanaChoice H5525-084 | $93.00 | $6,750 | 4.0 / 5 | 8,612 |
| Humana | H5525-074-0 | HumanaChoice H5525-074 | $49.00 | $3,650 | 4.0 / 5 | 6,819 |
| Humana | H5525-075-0 | HumanaChoice H5525-075 | $0.00 | $4,350 | 4.0 / 5 | 5,574 |
| UnitedHealthcare | H0294-032-0 | AARP Medicare Advantage from UHC CA-0024 | $150.00 | $7,150 | 3.0 / 5 | 4,571 |
| Humana | H5525-057-0 | Humana USAA Honor Giveback with Rx | $0.00 | $6,400 | 4.0 / 5 | 2,342 |
| Alignment Health Plan | H4961-001-0 | Alignment Health My Choice 001 | $149.00 | $4,200 | 4.5 / 5 | 2,153 |
| Alignment Health Plan | H8832-001-0 | Alignment Health Advantage 001 | $70.00 | $4,451 | 4.0 / 5 | 1,971 |
| Humana | H5525-078-0 | Humana USAA Honor Giveback | $0.00 | $6,750 | 4.0 / 5 | 1,852 |
| Humana | H5525-056-0 | HumanaChoice H5525-056 | $97.00 | $7,150 | 4.0 / 5 | 1,439 |
| Alignment Health Plan | H8832-002-0 | Alignment Health Advantage 002 | $101.50 | $2,850 | 4.0 / 5 | 941 |
Most-Enrolled HMO Plans in California
HMO Medicare Advantage plans account for 190 of the plans offered across California in 2027. Of these, 130 have a $0 monthly plan premium. The average monthly premium is $16.97, with an average maximum out-of-pocket (MOOP) limit of $2,904.68. Rated HMO plans average 3.83 CMS stars out of 5. Below are the 10 most-enrolled HMO plans, or all available plans if fewer than 10 qualify.
| Provider | Plan ID | Plan Name | Premium | MOOP | Stars | Enrollment |
|---|---|---|---|---|---|---|
| Kaiser Permanente | H0524-003-0 | Kaiser Permanente Senior Advantage LA, Orange Co. | $0.00 | $999 | 4.5 / 5 | 234,886 |
| Kaiser Permanente | H0524-015-0 | Kaiser Permanente Senior Advantage Inland Empire | $0.00 | $2,500 | 4.5 / 5 | 92,506 |
| SCAN Health Plan | H5425-006-0 | SCAN Classic | $0.00 | $299 | 4.0 / 5 | 85,559 |
| Kaiser Permanente | H0524-051-0 | Kaiser Permanente Sr Advantage Basic Sac., Sonoma | $29.00 | $6,000 | 4.5 / 5 | 70,231 |
| Kaiser Permanente | H0524-037-0 | Kaiser Permanente Senior Advantage San Diego | $0.00 | $3,400 | 4.5 / 5 | 68,028 |
| Kaiser Permanente | H0524-032-0 | Kaiser Permanente Senior Advantage Alam., SF, Napa | $105.00 | $3,900 | 4.5 / 5 | 61,673 |
| SCAN Health Plan | H5425-007-0 | SCAN Classic | $0.00 | $399 | 4.0 / 5 | 57,291 |
| Kaiser Permanente | H0524-013-0 | Kaiser Permanente Sr Adv Enhanced Sac., Sonoma | $99.00 | $3,900 | 4.5 / 5 | 49,477 |
| Imperial Health Plan of California, Inc. | H5496-012-0 | Imperial Dynamic Plan | $0.00 | $295 | 4.0 / 5 | 48,375 |
| Kaiser Permanente | H0524-039-0 | Kaiser Permanente Sr Adv Enhanced Santa Clara | $101.00 | $3,900 | 4.5 / 5 | 41,315 |
Most-Enrolled HMO-POS Plans in California
In 2027, California offers 53 HMO-POS Medicare Advantage plans, which may allow certain out-of-network services under plan-specific rules. Among these plans, 42 have a $0 monthly premium. The average monthly premium is $19.62, and the average maximum out-of-pocket (MOOP) limit is $3,168.81. The average CMS star rating among rated HMO-POS plans is 3.12 out of 5. The table below ranks up to 10 plans by reported statewide enrollment.
| Provider | Plan ID | Plan Name | Premium | MOOP | Stars | Enrollment |
|---|---|---|---|---|---|---|
| UnitedHealthcare | H0543-170-0 | AARP Medicare Advantage from UHC CA-006P | $0.00 | $999 | 3.0 / 5 | 45,998 |
| UnitedHealthcare | H0543-168-0 | AARP Medicare Advantage from UHC CA-004P | $0.00 | $800 | 3.0 / 5 | 39,586 |
| UnitedHealthcare | H0543-169-0 | AARP Medicare Advantage from UHC CA-005P | $0.00 | $800 | 3.0 / 5 | 23,890 |
| UnitedHealthcare | H0543-204-0 | UHC Sharp Medicare Advantage ValueRx CA-12P | $0.00 | $4,450 | 3.0 / 5 | 20,839 |
| Anthem Blue Cross | H0544-058-0 | Anthem Select | $0.00 | $800 | 3.5 / 5 | 15,979 |
| UnitedHealthcare | H0543-145-0 | UHC Sharp Medicare Advantage CA-001P | $0.00 | $4,450 | 3.0 / 5 | 9,833 |
| Alignment Health Plan | H3815-016-0 | Alignment Health Platinum + Instacart 016 | $0.00 | $1,100 | 3.5 / 5 | 8,684 |
| Anthem Blue Cross Partnership Plan | H4161-002-0 | Anthem Prime | $0.00 | $800 | 3.0 / 5 | 8,055 |
| UnitedHealthcare | H0543-225-0 | UHC Sharp Medicare Advantage CA-026P | $0.00 | $4,450 | 3.0 / 5 | 7,514 |
| Anthem Blue Cross | H0544-062-0 | Anthem Medicare Advantage | $0.00 | $2,800 | 3.5 / 5 | 7,188 |
- CMS.gov, Medicare Advantage & Special Needs Plan Landscape Source Files — Version: 202609
- CMS.gov, Medicare Part C & D Performance Data — Version: 2026
- CMS.gov, Medicare Advantage & Part D Contract and Enrollment Data — Version: 2026-10
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Data sources and methodology documentation.
Provenance documentation for this data is maintained under the U.S. Core Data for Interoperability (USCDI) Provenance standard.
Page content independently curated and maintained by David W. Bynon, Editorial Steward, using a standardized, data-driven methodology for accurate, non-commercial Medicare plan interpretation and resolution.
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