116.3 per 100K
860:1 · 865 providers
California 120.7 · US 119.6
Medicare-enrolled: 46% (CMS Doctors & Clinicians, August 2026)
HRSA AHRF benchmark: 834 (2023 data, AHRF 2024-2025)
Find primary care physicians in San Mateo County →Ltrl Health Data
San Mateo County, CA
Healthcare providers per resident, insurance coverage and preventive care, with state and US comparisons.
Population 743,568 (Census, 2025)Provider data: NPPES, September 2026FIPS 06081
Healthcare providers
Dentists
120.6 per 100K
829:1 · 897 providers
California 101.0 · US 80.5
Medicare-enrolled: 0% (CMS Doctors & Clinicians, August 2026)
HRSA AHRF benchmark: 868 (2024 data, AHRF 2024-2025)
Find dentists in San Mateo County →Mental health providers
531.4 per 100K
188:1 · 3,951 providers
California 540.2 · US 396.3
Medicare-enrolled: 7% (CMS Doctors & Clinicians, August 2026)
Find mental health providers in San Mateo County →Other primary care providers
82.3 per 100K
1,215:1 · 612 providers
California 113.6 · US 169.7
Medicare-enrolled: 38% (CMS Doctors & Clinicians, August 2026)
Find other primary care providers in San Mateo County →Primary care physicians
| Measure | Providers | Per 100,000 | Residents per provider | California | US | Trend |
|---|---|---|---|---|---|---|
| Dentists Medicare-enrolled: 0% (CMS Doctors & Clinicians, August 2026) HRSA AHRF benchmark: 868 (2024 data, AHRF 2024-2025) Find dentists in San Mateo County → | 897 | 120.6 | 829:1 | 101.0 | 80.5 | |
| Mental health providers Medicare-enrolled: 7% (CMS Doctors & Clinicians, August 2026) Find mental health providers in San Mateo County → | 3,951 | 531.4 | 188:1 | 540.2 | 396.3 | |
| Other primary care providers Medicare-enrolled: 38% (CMS Doctors & Clinicians, August 2026) Find other primary care providers in San Mateo County → | 612 | 82.3 | 1,215:1 | 113.6 | 169.7 | |
| Primary care physicians Medicare-enrolled: 46% (CMS Doctors & Clinicians, August 2026) HRSA AHRF benchmark: 834 (2023 data, AHRF 2024-2025) Find primary care physicians in San Mateo County → | 865 | 116.3 | 860:1 | 120.7 | 119.6 |
Trend: June 2021 to September 2026. State and US figures are pooled (total providers ÷ total population) for the same period.
Coverage and preventive care
Flu vaccinations53.0%
California 41.0% · US 44.0% · CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023
California 30.0% · US 36.0% · CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023
California 2,428 · US 2,769 · CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023
California 6.9% · US — · U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024
California 8.3% · US — · U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024
California 3.1% · US — · U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024
| Measure | San Mateo County | California | US | Source |
|---|---|---|---|---|
| Flu vaccinations | 53.0% | 41.0% | 44.0% | CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023 |
| Mammography screening | 37.0% | 30.0% | 36.0% | CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023 |
| Preventable hospital stays | 1,611 | 2,428 | 2,769 | CMS Office of Minority Health, Mapping Medicare Disparities Tool, 2023 |
| Uninsured (under 65) | 4.4% | 6.9% | — | U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024 |
| Uninsured adults (18–64) | 5.1% | 8.3% | — | U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024 |
| Uninsured children (under 19) | 2.2% | 3.1% | — | U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE), 2024 |
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Ltrl Health Data. San Mateo County, CA: healthcare providers and access. Data as of September 2026. https://ltrl.com/research/workforce/california/san-mateo-county
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Nearby counties
Registered, not necessarily practicing. Provider counts come from the national provider registry (NPPES): active individual clinicians, counted once under their primary specialty at their practice-location county. Some registered clinicians are retired or see few patients. Counts under 10, or places with fewer than 10,000 residents, are flagged and left out of rankings. Nothing is estimated or imputed. Methodology
Sources: NPPES (CMS), September 2026; Census population estimates; Census SAHIE; CMS Mapping Medicare Disparities. Ltrl is not affiliated with County Health Rankings & Roadmaps.