Medicare Plans

Open Medicare Plan Data.

2027 Medicare Special Needs Plans in San Mateo County, CA

Last update: .

For 2027, San Mateo County, CA includes 8 Medicare Special Needs Plans. Enrollment across these plans totals approximately 9,253, with {stars_plus_percentage} rated 4 stars or higher.

Special Needs Plans (SNPs) are designed for specific healthcare or eligibility situations. Other options may also be available. Visit Medicare Options in San Mateo County, CA to explore additional plan types and coverage choices.

At a Glance

  • Average Monthly Premium: $2.16/mo
  • $0 Premium Plans: 5
  • Average MOOP: $6,668 ($9,250 max. Excludes zero-cost D-SNPs.)
  • Star Ratings (Plan Mix): {star_mix}
  • Average Part D Deductible: $437.50
  • Total SNP Enrollment: 9,253
  • SNP Plans with the Highest Enrollment
    (as of October 5, 2026)
    1. CareAdvantage (D-SNP) — 7,977 enrollees
    2. Kaiser Permanente Dual Complete North P22 (D-SNP) — 502 enrollees
    3. SCAN Balance (C-SNP) — 466 enrollees

Dual Eligible Special Needs Plans (D-SNPs)

Dual Eligible Special Needs Plans (D-SNPs) are Medicare Advantage plans for individuals eligible for both Medicare and Medicaid. Plan availability varies by county.

Total D-SNP Plans
2
Average Monthly Premium
$3.65/mo
Beneficiaries Enrolled
8,479
$0 Premium Plans
1
Zero Cost Plans
2
Top D-SNP by Enrollment
CareAdvantage (D-SNP) — 7,977 enrollees
Plans without Drug Coverage
0
2027 D-SNP Medicare plans in San Mateo County, California (comparison chart)
Medicare SNP Plan CMS Stars* Premium/Mo MOOP Rx Ded. CMS ID
HEALTH PLAN OF SAN MATEO CareAdvantage
☆☆☆☆☆
 $7 9850.00 $700 H6019-001-0
Kaiser Permanente Dual Complete North P22
☆☆☆☆☆
 $0 9850.00 $700 H8794-022-0
What is the average monthly premium for D-SNP plans in San Mateo County?
D-SNP plans in San Mateo County cost $3.65 per month.
Which D-SNP plan has the highest enrollment in San Mateo County?
The most popular D-SNP plan in San Mateo County is CareAdvantage (D-SNP), with 7,977 enrollees.
How many D-SNP plans are available in San Mateo County?
In 2027, San Mateo County offers 2 D-SNP plans with 8,479 enrollees.

Medicare Institutional Special Needs Plans (I-SNPs)

Institutional Special Needs Plans (I-SNPs) are Medicare Advantage plans for individuals in institutional or long-term care settings. Plan availability varies by county.

Total I-SNP Plans
2
Average Monthly Premium
$3.65/mo
Beneficiaries Enrolled
0
$0 Premium Plans
1
Average MOOP
$5,875
Top I-SNP by Enrollment
— 0 enrollees
Plans without Drug Coverage
0
2027 I-SNP Medicare plans in San Mateo County, California (comparison chart)
Plan Name CMS Stars* Premium/Mo Network
Premier Care
☆☆☆☆☆
 $0 1900.00 $50 H3274-002-0
Senior Care
☆☆☆☆☆
 $7 9850.00 $700 H3274-001-0

What is the average monthly premium for I-SNP plans in San Mateo County?

I-SNP plans in San Mateo County cost $3.65 per month.

Which I-SNP plan has the highest enrollment in San Mateo County?

The most popular I-SNP plan in San Mateo County is , with 0 enrollees.

How many I-SNP plans are available in San Mateo County?

In 2027, San Mateo County offers 2 I-SNP plans with 0 enrollees.

Chronic Condition Special Needs Plans (C-SNPs)

Chronic Condition Special Needs Plans (C-SNPs) are Medicare Advantage plans available to beneficiaries who meet CMS eligibility criteria for specific chronic or disabling health conditions.

Total C-SNP Plans
4
Average Monthly Premium
$0.68/mo
Beneficiaries Enrolled
774
$0 Premium C-SNPs
3
Average MOOP
$5,474
Most Popular C-SNP
SCAN Balance (C-SNP) with 466 enrollees
C-SNPs Without Drug Coverage
0
2027 C-SNP Medicare plans in San Mateo County, California (comparison chart)
Plan Name CMS Stars* Premium/Mo Network
Imperial Flex
☆☆☆☆☆
 $3 9850.00 $450 H5496-017-0
Imperial Senior Value
☆☆☆☆☆
 $0 295.00 $0 H5496-005-0
SCAN Balance
☆☆☆☆☆
 $0 1900.00 $450 H5425-076-0
SCAN Strive
☆☆☆☆☆
 $0 9850.00 $450 H5425-098-0
What is the total number of C-SNP plans in San Mateo County?

There are 4 C-SNP plans in 2027, covering 774 enrollees.

How much do C-SNP plans cost in San Mateo County?

The average C-SNP premium in San Mateo County is $0.68 per month, with 3 plans offering $0 premiums.

What is the most popular C-SNP plan in San Mateo County?

SCAN Balance (C-SNP) is the top C-SNP in San Mateo County, with 466 enrollees.

What is the total number of C-SNP plans in San Mateo County?

There are 4 C-SNP plans in 2027, covering 774 enrollees.

All plan counts, enrollment totals, averages, and percentage distributions are calculated at the county level using CMS data and include Medicare Special Needs Plans (SNP) only, based on a consistent aggregation methodology.

Data sources and methodology documentation .

MedicarePlans.com is an independent informational resource and has no affiliation with, or endorsement from, the U.S. Government or the federal Medicare program.

Data provenance is documented in accordance with the U.S. Core Data for Interoperability (USCDI) Provenance standard .