Dentists in Ontario, California
210 dental practices in Ontario, California. Filter by what you need, sort by what is closest, and send one request. Ontario is in San Bernardino County.
Looking for something in particular?
Practices in Ontario that answer a specific need. Every one of these comes from the practice or from the federal registry, never from a guess.
Looking for a specialist in Ontario?
A general dentist handles most things and refers the rest. These are the specialists listed here.
Dentists in Ontario by ZIP code
The quickest way to find who is actually near you, and the way your insurance card describes where you live.
Towns near Ontario
Worth a look if you are willing to drive a little, or if you work in one town and live in another.
Questions people ask
How many dentists are there in Ontario, CA?
210 dental practices in Ontario, CA are on the National Provider Identifier register, the public record every US dentist appears in, as it stood on 3 October 2026. 198 of them are general dentists and 12 are registered as specialists. Every one of them is listed on this page, in the same order for everybody, and no practice can pay to move up it.
How do I get a dental appointment quickly in Ontario, CA?
Ask several practices at once. Every listing on this page has a tick box, and one request goes to all the ones you tick, so you write your name and what is wrong once instead of ringing five receptions in working hours. Practices that have claimed a listing read those requests by email; the rest are told a patient is asking for them, and you can ring them from their own page. If you are in real pain, phone rather than write.
Which ZIP codes in Ontario, CA have dentists?
3 ZIP codes in Ontario, CA have enough practices for a page of their own: 91761, 91762, 91764. Each one lists the practices with an address in that ZIP code, so it is the closest thing to a street level search this data supports.
What does a dentist cost in Ontario, CA?
This site does not publish prices, because a price a practice has not agreed to is not a price. What treatments actually involve, what they usually cost across the country and what to ask before you sit down is written up in the patient guides at https://dent-ox.com/patient-guides. Ask the practice for the cost of the first visit when you ring: that one is a straight answer everywhere.
Is this list of dentists in Ontario, CA complete, and does anybody pay to be on it?
It is every dental practice with a Ontario, CA address on the federal register as it stood on 3 October 2026, minus any that asked to be taken down. Nobody pays to be listed and nobody can pay for a position: the order is who is most likely to answer you, and then distance. Practices claim their own listing for free, which lets them correct it and receive requests by email.