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Therapists in Ontario, CA

337 therapists with a practice address in Ontario, from the federal NPI Registry. Alphabetical by last name. Tap a name for the address, phone number and NPI record.

337therapists
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NPI records don't show insurance, openings or telehealth. Call the office to confirm those before you book.

Showing 1–50 of 337Sorted by last name
Christopher Adair, MAMental Health Counselor · Ontario, CA 91764NPI 1487955746Ilse AertsProfessional Counselor · Ontario, CA 91764NPI 1174975155Ana Aguilar, LCSWMental Health Counselor · Ontario, CA 91761NPI 1033510995Ruth AlbarranMental Health Counselor · Ontario, CA 91764NPI 1578744488Paul Allen, LMFTMarriage & Family Therapist · Ontario, CA 91764NPI 1760847610Antonia Allison, MFTIMarriage & Family Therapist · Ontario, CA 91762NPI 1780003418Laura AmadorAddiction Counselor · Ontario, CA 91762NPI 1407137359Pardis Amirhoushmand, PhDPsychologist · Ontario, CA 91762NPI 1003946179Kristofer Anderson, MFTMarriage & Family Therapist · Ontario, CA 91761NPI 1245510353Anahi Angel Garcia, AMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1982159075Amanda AranaMarriage & Family Therapist · Ontario, CA 91761NPI 1033594023Leonila Araneta, LCSWClinical Social Worker · Ontario, CA 91761NPI 1861771974Elisha AraozMental Health Counselor · Ontario, CA 91764NPI 1699912311Victoria ArceMental Health Counselor · Ontario, CA 91761NPI 1588048144David ArmanCounselor · Ontario, CA 91761NPI 1568736627Andrea ArmasMental Health Counselor · Ontario, CA 91761NPI 1558861484Vanessa Armas, LMFTMarriage & Family Therapist · Ontario, CA 91764NPI 1518482637Toni ArmstrongMental Health Counselor · Ontario, CA 91764NPI 1194112300Maria ArroyoCounselor · Ontario, CA 91764NPI 1386012151Adriana AvalosMental Health Counselor · Ontario, CA 91764NPI 1710265756Tina Avila, LMFTMarriage & Family Therapist · Ontario, CA 91761NPI 1093041196Savita Azza-Patel, MSWMental Health Counselor · Ontario, CA 91764NPI 1851834048Dytanna Bailey, AAMental Health Counselor · Ontario, CA 91764NPI 1417082199Andrea Baird, MAMarriage & Family Therapist · Ontario, CA 91764NPI 1376736538Albert BalderasMarriage & Family Therapist · Ontario, CA 91762NPI 1518277821Michelle BallardMental Health Counselor · Ontario, CA 91761NPI 1982900783Devella Banks, LMFTMarriage & Family Therapist · Ontario, CA 91761NPI 1376882209Bryn Barkan, LCSWClinical Social Worker · Ontario, CA 91762NPI 1538282991Carla BarnesClinical Social Worker · Ontario, CA 91761NPI 1598197121Javier Barrero, MAMFTCounselor · Ontario, CA 91762NPI 1215184221Mayra BeasClinical Social Worker · Ontario, CA 91764NPI 1609232065Brianna Belcher, LCSWClinical Social Worker · Ontario, CA 91762NPI 1558669648Mignon BellCounselor · Ontario, CA 91762NPI 1679812036Jermaine Bennett, LCSWClinical Social Worker · Ontario, CA 91764NPI 1053761247Joseph BermudezMental Health Counselor · Ontario, CA 91764NPI 1659670271Heather Bernhardt-Nevarez, LCSWClinical Social Worker · Ontario, CA 91761NPI 1689177735Jason BettsMarriage & Family Therapist · Ontario, CA 91761NPI 1588060487Ellary BhimjiMental Health Counselor · Ontario, CA 91764NPI 1609094879Janelle BonuraMental Health Counselor · Ontario, CA 91762NPI 1881171387Maxine Bowden, MFTMarriage & Family Therapist · Ontario, CA 91762NPI 1407979800Aubree BradfordAddiction Counselor · Ontario, CA 91762NPI 1710470745Kelsey BradleyAddiction Counselor · Ontario, CA 91762NPI 1518331222Elizabeth Brenenstall, LCSWClinical Social Worker · Ontario, CA 91764NPI 1235339078Judy Briggs, LCSWClinical Social Worker · Ontario, CA 91762NPI 1205026200Laura Brown, LMFTMarriage & Family Therapist · Ontario, CA 91764NPI 1790809366Megan BrownMarriage & Family Therapist · Ontario, CA 91762NPI 1558632356Michele Buyco, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1003006164Mfonobong CaloMental Health Counselor · Ontario, CA 91761NPI 1114274602Veronica CamachoClinical Social Worker · Ontario, CA 91764NPI 1003956681Sirena Campagna, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1093199473

Other provider types in Ontario

About therapists

Licensed therapists: psychologists, counselors, clinical social workers and marriage & family therapists. All provide talk therapy; none of the non-psychologists can do formal psychological testing.

Before you call

Ask whether they're taking new patients, which insurance plans they're in, what a session costs without insurance, and whether they see people by video. You can check any clinician's license with your state licensing board, and their NPI record at the CMS NPI Registry.

What therapy costs · Free and low-cost options · Which provider do I need?

Questions

How many therapists are in Ontario, CA?

The NPI Registry lists 337 therapists with a practice address in Ontario. Some work only inside a hospital, clinic or school, and a few may have retired without closing their NPI, so the number seeing new patients is lower.

Do these therapists take insurance?

NPI records don't include insurance. Call the office or check your insurer's directory. How coverage works.

How is this list ordered?

Alphabetically by last name. Nobody pays to be listed or to appear higher.

Listings come from the CMS National Plan and Provider Enumeration System (NPI Registry), October 2026 copy. A listing is not a recommendation. Nobody pays to appear here or to rank higher; lists are alphabetical by last name. This page is general information, not medical advice. How we verify

In crisis?Tap to call 988