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Medicare Advantage Plans in Sonoma County, CA
Looking for Medicare Advantage plans in Sonoma County? Enter your ZIP below to compare affordable monthly premium plans in your area.
Sonoma County, CA, is home to 8 Medicare Advantage (Medicare Part C) plans in 2025.
Learn more about Medicare Advantage in California or call to speak with a licensed insurance agent who can help you compare Sonoma County Medicare Advantage plans and – if you're eligible – help you enroll.
We offer plans from Humana, UnitedHealthcare®, Anthem Blue Cross and Blue Shield*, Aetna, Cigna Healthcare, Wellcare, or Kaiser Permanente.
Enrollment may be limited to certain times of the year. See why you may be able to enroll.
2025 Medicare Advantage plans in Sonoma County
| 2025 Medicare Advantage Plans in Sonoma | |
|---|---|
| Number of unique plans | 8 |
| Average monthly premium | $25.12 |
| Average (in-network) out-of-pocket maximum | $6,318.75 |
| Average Medicare Star Rating* | 3.62 |
While the number of unique plans in any county can change slightly every year, the table above presents a good idea of what you can expect to see in 2025.
The average monthly premium for Medicare Advantage plans in Sonoma is $25.12 per month in 2025, though there may be plans available where you live that feature different premiums.
Medicare Advantage plans in Sonoma County have an average Medicare Star Rating of 3.62 in 2025.* Plans rated four stars or higher are considered top-rated Medicare plans.
Premiums, deductibles and other costs may vary. The numbers reported in the table above are taken from the Centers for Medicare & Medicaid Services (CMS). A licensed insurance agent will be able to help you review and compare costs for specific plans available in California or wherever you may live.
* Every year, the Centers for Medicare & Medicaid Services (CMS) evaluates plans based on a 5-star rating system.
List of Medicare Advantage plans in Sonoma County
The following table includes cost information and other plan details for Medicare Advantage plans available in Sonoma in 2025.
| Plan Name | Plan Code | Monthly Premium | Deductible | Out of Pocket Max | Prescription Drug Coverage | Medicare Star Rating |
|---|---|---|---|---|---|---|
| AARP Medicare Advantage from UHC CA-029P (HMO-POS) | H0543-228-000 | $46.00 | $340.00 | $4,900.00 | Yes | 3.5 out of 5 stars |
| Aetna Medicare Core (PPO) | H5521-425-000 | $0.00 | $590.00 | $5,900.00 | Yes | 4.5 out of 5 stars |
| Aetna Medicare Core II (PPO) | H5521-581-000 | $46.00 | $590.00 | $4,900.00 | Yes | 4.5 out of 5 stars |
| Aetna Medicare Eagle Plus (PPO) | H5521-369-000 | $0.00 | N/A | $6,750.00 | No | 4.5 out of 5 stars |
| Anthem Medicare Advantage (PPO) | H8552-029-000 | $44.00 | $575.00 | $8,850.00 | Yes | 3 out of 5 stars |
| Kaiser Permanente Dual Complete North P4 (HMO D-SNP) | H8794-004-000 | $0.00 | $590.00 | $9,350.00 | Yes | Plan too new to be measured |
| Kaiser Permanente Sr Adv Enhanced Sac., Sonoma (HMO) | H0524-013-000 | $65.00 | $0.00 | $3,900.00 | Yes | 4.5 out of 5 stars |
| Kaiser Permanente Sr Advantage Basic Sac., Sonoma (HMO) | H0524-051-000 | $0.00 | $0.00 | $6,000.00 | Yes | 4.5 out of 5 stars |
List of prescription drug plans in Sonoma County
The following table includes cost information and other plan details for prescription drug plans available in Sonoma in 2025.
| Plan Name | Plan Code | Monthly Premium | Deductible | Preferred Pharmacies | Accepts Mail Order | Medicare Star Rating |
|---|---|---|---|---|---|---|
| AARP Medicare Rx Preferred from UHC (PDP) | S5921-413-000 | $115.40 | $0.00 | Yes | Yes | 2.5 out of 5 stars |
| AARP Medicare Rx Saver from UHC (PDP) | S5921-376-000 | $124.80 | $590.00 | Yes | Yes | 2.5 out of 5 stars |
| Anthem Blue Cross MediBlue Rx Plus (PDP) | S5596-088-000 | $164.90 | $120.00 | Yes | Yes | 3.5 out of 5 stars |
| Anthem Blue Cross MediBlue Rx Standard (PDP) | S5596-087-000 | $135.60 | $590.00 | Yes | Yes | 3.5 out of 5 stars |
| Cigna Healthcare Assurance Rx (PDP) | S5617-158-000 | $1.80 | $590.00 | Yes | Yes | 2.5 out of 5 stars |
| Cigna Healthcare Extra Rx (PDP) | S5617-277-000 | $140.90 | $175.00 | Yes | Yes | 2.5 out of 5 stars |
| Cigna Healthcare Saver Rx (PDP) | S5617-382-000 | $20.60 | $590.00 | Yes | Yes | 2.5 out of 5 stars |
| Humana Basic Rx Plan (PDP) | S5884-114-000 | $110.20 | $590.00 | Yes | Yes | Plan too new to be measured |