Your Medicare Coverage Options in San Mateo County, CA
Explore Medicare choices for residents of San Mateo County, California, from Original Medicare to Medicare Advantage, Part D drug plans, Medigap coverage, and local assistance programs.
Medicare Options at a Glance
Residents of San Mateo County, California can choose from several Medicare coverage types, each offering a different balance of access, cost, and benefits. The main options are:
- Original Medicare: Provides broad access to providers across the country.
- Medicare Advantage: Offers all-in-one coverage, often with lower upfront costs.
- Part D: Covers prescription drugs when paired with Original Medicare.
- Medigap: Reduces gaps in coverage and limits out-of-pocket expenses.
- SNPs: Tailored plans for individuals with qualifying health or financial needs.
- Other Options: Includes VA coverage, employer-sponsored plans, and local support programs.
Because each option works in a different way, understanding the differences is critical when choosing Medicare coverage in San Mateo County.
Medicare Advantage Options in San Mateo County
In San Mateo County, Medicare Advantage plans offer a bundled alternative to Original Medicare, combining hospital and medical coverage, frequently including drug benefits and added services. Plan options, networks, and out-of-pocket limits differ by location.
| Medicare Advantage Snapshot | San Mateo County |
|---|---|
| Total Medicare Advantage plans | 22 |
| $0 premium plans | 15 |
| HMO plans | 16 |
| PPO plans | 3 |
| Plans with drug coverage | 19 |
| Lowest MOOP | $296 |
| Highest MOOP | $9,250 |
| Highest Part B giveback | $181.20 |
Top PPO Plans by Enrollments
| Plan | CMS Rating | Enrollment |
|---|---|---|
| Aetna Medicare Eagle | 4.5 ★ | 2,645 |
| Alignment Health My Choice | 4.0 ★ | 1,655 |
| Aetna Medicare Enhanced | 4.5 ★ | 741 |
Top HMO Plans by Enrollments
| Plan | CMS Rating | Enrollment |
|---|---|---|
| Imperial Dynamic Plan | 3.5 ★ | 45,983 |
| Kaiser Permanente Sr Adv Enhanced Marin San Mateo | 4.5 ★ | 32,246 |
| Kaiser Permanente Senior Advantage Basic San Mateo | 4.5 ★ | 7,528 |
Top HMO-POS Plans by Enrollments
| Plan | CMS Rating | Enrollment |
|---|---|---|
| Aetna Medicare Signature Extra | 3.0 ★ | 3,219 |
| Anthem Prime | 3.0 ★ | 3,038 |
| Anthem Medicare Advantage | 3.0 ★ | 515 |
Medicare Advantage plans are primarily defined by their provider networks, whether prescription drug coverage is included, and their annual out-of-pocket limits. For those seeking bundled benefits and lower premiums, these plans are often the starting point, though network access and plan requirements should be considered.
Medicare Part D Options in San Mateo County
For those using Original Medicare, Part D plans provide separate prescription drug coverage. Plan differences include premiums, deductibles, pharmacy access, and the list of covered drugs.
Top Basic Coverage Plans by Enrollments
| Plan | Premium | Deductible | Enrollment |
|---|---|---|---|
| Wellcare Classic | $6.20 | $615 | 564,972 |
| HealthSpring Assurance Rx | $0.00 | $615 | 548,885 |
| SilverScript Choice | $103.60 | $615 | 164,484 |
Top Enhanced Coverage Plans by Enrollments
| Plan | Premium | Deductible | Enrollment |
|---|---|---|---|
| Wellcare Value Script | $5.70 | $615 | 459,030 |
| AARP Medicare Rx Preferred from UHC | $165.40 | $130 | 154,077 |
| HealthSpring Extra Rx | $70.60 | $615 | 46,657 |
Part D plan choice depends less on the number of plans and more on whether your drugs are covered at your preferred pharmacy at a reasonable cost.
See Medicare Part D plans in California
Medigap Plans in San Mateo County
Medicare Supplement (Medigap) plans are designed to fill gaps in Original Medicare by helping with deductibles, copayments, and coinsurance. These plans work alongside Original Medicare and generally require separate prescription drug coverage through Part D.
Data from 22 insurers indicates premiums beginning around $34 and exceeding $1,368, depending on plan type and how rates are set. Although coverage is standardized, pricing differences across insurers can be substantial.
| Medigap Snapshot | San Mateo County |
|---|---|
| Works with Original Medicare | Yes |
| Includes prescription drug coverage | No |
| Requires separate Part D plan | Usually yes |
| Best fit for | Beneficiaries who want broad provider access and predictable cost sharing |
Many residents of San Mateo consider Medigap when they want nationwide provider access under Original Medicare, rather than relying on the network restrictions of Medicare Advantage plans.
Sample Plan G Pricing in California
Plan G typically ranges from $148 to $1,189.
| Carrier | Plan | Low | High |
|---|---|---|---|
| AARP - UnitedHealthcare | G | $173 | $374 |
| Allstate | G | $256 | $773 |
| Humana | G | $214 | $765 |
| Mutual of Omaha | G | $187 | $616 |
Sample Plan N Pricing in California
Plan N typically ranges from $114 to $912.
| Carrier | Plan | Low | High |
|---|---|---|---|
| AARP - UnitedHealthcare | N | $146 | $317 |
| Allstate | N | $202 | $611 |
| Humana | N | $155 | $564 |
| Mutual of Omaha | N | $139 | $454 |
Explore all Medicare Supplement plans in California for more details.
SNP Coverage Options in San Mateo County
Special Needs Plans (SNPs) are a type of Medicare Advantage plan designed for individuals with specific eligibility criteria, such as dual eligibility for Medicaid, qualifying chronic conditions, or institutional care requirements.
| SNP Snapshot | San Mateo County |
|---|---|
| Total SNP plans | 11 |
| D-SNP plans | 4 |
| C-SNP plans | 5 |
| I-SNP plans | 2 |
Top D-SNP Plans by Enrollments
| Plan | CMS Rating | Enrollment |
|---|---|---|
| Kaiser Permanente Dual Complete North P2 | 4.0 ★ | 27,042 |
| CareAdvantage | 3.0 ★ | 8,456 |
| Central Health Dual Access Plan | 3.0 ★ | 1,250 |
Top C-SNP Plans by Enrollments
| Plan | CMS Rating | Enrollment |
|---|---|---|
| Central Health Embrace Care Plan | 3.0 ★ | 7,521 |
| SCAN Strive | 4.0 ★ | 4,246 |
| Imperial Senior Value | 3.5 ★ | 3,898 |
Top I-SNP Plans by Enrollments
| Plan | CMS Rating | Enrollment |
|---|---|---|
| Premier Care | 0.0 ★ | 389 |
| Senior Care | 0.0 ★ | 80 |
Availability of SNPs in San Mateo is tied to eligibility requirements. These plans are not available to all beneficiaries but can be especially valuable for those with Medicaid or qualifying chronic conditions.
VA Coverage and Local Medicare Help in San Mateo County
Some beneficiaries may have coverage choices or support options outside standard Medicare plan categories, including VA health benefits, retiree coverage, and counseling programs.
| Additional Support Options | San Mateo County |
|---|---|
| VA health coverage may coordinate with Medicare | Yes |
| SHIP / local counseling availability | HICAP |
| Local help resource | Health Insurance Counseling and Advocacy Program |
Choosing the Best Medicare Coverage for You in San Mateo County
Choosing the right Medicare coverage is based on how you want to access care, manage expenses, and select providers. Most decisions start with a choice between Medicare Advantage and Original Medicare.
Medicare Advantage plans offer all-in-one coverage that typically includes hospital, medical, and prescription drug benefits. These plans may have lower premiums and added services, but they generally operate within provider networks.
Original Medicare gives you the flexibility to see any provider nationwide who accepts Medicare. Many people pair it with a Part D plan and a Medigap policy to help control costs and improve coverage predictability.
Special Needs Plans (SNPs) may be an option for those with specific health or eligibility requirements, including Medicaid. These plans are specialized and only available to qualifying individuals.
Your ideal coverage will depend on your doctors, prescriptions, and how you prefer to balance premiums and out-of-pocket spending.
For a closer look, explore the plans and coverage types available in San Mateo County.
- CMS.gov, Medicare Advantage & Special Needs Plan Landscape Source Files — Last accessed May 2, 2026
- CMS.gov, Medicare Part C & D Performance Data — Last accessed May 2, 2026
- CMS.gov, Medicare Advantage & Part D Contract and Enrollment Data — Last accessed May 2, 2026
County-level figures shown on this page (including plan counts, enrollment totals, averages, and percentage distributions) are derived from CMS-published datasets using a standardized aggregation methodology.
Data sources and methodology documentation .
- Medicare.gov, "What's Medicare Drug Coverage (Part D)?" — Last accessed May 1, 2026
- Medicare.gov, "Understanding Medicare Advantage Plans" — Last accessed May 6, 2026
- NCOA.org, "5 Steps to Choosing the Right Medicare Plan for You" — Last accessed May 6, 2026
- Medicare.gov, "What Is Medigap and How Does It Work?" — Last accessed May 6, 2026
MedicarePlans.com is an independent, non-government informational resource and is not affiliated with or endorsed by the U.S. Government or the federal Medicare program.
Data provenance documentation is maintained in alignment with 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.