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Find your doctor in Ontario, CA

Verified NPPES providers — narrow your search by ZIP code.

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Doctors in Ontario, CA

7,207 active providers from the official NPPES registry. Filter by ZIP code for a finer search.

Popular specialties in Ontario

Browse verified providers (NPI/NPPES) by specialty in this area.

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Primary care, pediatricians, OB-GYNs and dentists in Ontario

Active providers with a phone number in Ontario, from the NPPES registry.

All providers in Ontario

In ZIP code 91761, the one with the most doctors in Ontario, 7.7% of residents have no health insurance and 65.5% are Hispanic (Census Bureau, ACS ACS 2024 5-year).

Census data · Ontario · ZIP 91761

Official demographics of the coverage area · ACS 2024 5-year

62,935
Total population
7.7%
Uninsured rate
No health coverage (ACS B27010)
$100,578
Median income
55,301
Population under 65
ACA-eligible age range
65.5%
Hispanic population

Source: US Census Bureau · ACS 5-year (Census Reporter)