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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
7pages

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

Showing 101–150 of 337Sorted by last name
Kimberly Esse, LCSWClinical Social Worker · Ontario, CA 91764NPI 1033413604Vanessa FabricatoreMental Health Counselor · Ontario, CA 91761NPI 1841426228Mara Fernandez, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1417238866Elsa Ferris, PsyDClinical Psychologist · Ontario, CA 91764NPI 1841632098Emily Fine, PhDClinical Psychologist · Ontario, CA 91761NPI 1578849287Nicholas Fittante, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1235238783Kaylin FitzgeraldAddiction Counselor · Ontario, CA 91762NPI 1013461656Elizabeth FloresCounselor · Ontario, CA 91762NPI 1265766679Sandra FonsecaMarriage & Family Therapist · Ontario, CA 91762NPI 1639469737Stephanie FoyMental Health Counselor · Ontario, CA 91764NPI 1427334614Diana Franco, MSMental Health Counselor · Ontario, CA 91764NPI 1871024141Cristina FroudeAddiction Counselor · Ontario, CA 91764NPI 1750789707Angelica FrutisMental Health Counselor · Ontario, CA 91764NPI 1962629980Irene Garcia, MSMental Health Counselor · Ontario, CA 91764NPI 1861627416N. GarciaMarriage & Family Therapist · Ontario, CA 91762NPI 1073636460Victor Garrido, LCSWClinical Social Worker · Ontario, CA 91764NPI 1225173206Elizabeth Gatt-Auzenne, MFTMarriage & Family Therapist · Ontario, CA 91762NPI 1174646574Erika GayosoMarriage & Family Therapist · Ontario, CA 91761NPI 1891126264Diane Gell, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1699074641Cassandra GhaznaviMental Health Counselor · Ontario, CA 91762NPI 1225552441Rachel Glaser, MACounselor · Ontario, CA 91761NPI 1508230285Gabriela Gomes Costardi, DOPsychologist · Ontario, CA 91762NPI 1609380930Ronald GonzalesAddiction Counselor · Ontario, CA 91764NPI 1265797815Chriscelle GonzalezAddiction Counselor · Ontario, CA 91762NPI 1801159686Jose Gonzalez, LCSWClinical Social Worker · Ontario, CA 91761NPI 1467700104Robert Gonzalez, LCSWClinical Social Worker · Ontario, CA 91761NPI 1285994491Brenda Gonzalez BarajasMental Health Counselor · Ontario, CA 91762NPI 1891163374Krysta Gordon-Rand, MSMental Health Counselor · Ontario, CA 91762NPI 1851517700Krystle Greely, INTERNAddiction Counselor · Ontario, CA 91761NPI 1154576650Chester GregsonMarriage & Family Therapist · Ontario, CA 91761NPI 1073633731Lisanne GreyAddiction Counselor · Ontario, CA 91764NPI 1326590977Roxana GuadalquivirMarriage & Family Therapist · Ontario, CA 91762NPI 1033483532Aidan GuerreroAddiction Counselor · Ontario, CA 91762NPI 1942756226Gloria GutierrezAddiction Counselor · Ontario, CA 91762NPI 1497005730Rebecca Hahn-Hooten, LMFTMental Health Counselor · Ontario, CA 91762NPI 1750756714Kimberly Hairston, LCSWClinical Social Worker · Ontario, CA 91762NPI 1083784938Quan HancockAddiction Counselor · Ontario, CA 91762NPI 1962655456Crystal HarrisCounselor · Ontario, CA 91764NPI 1902141484Amy Harvey, MAMarriage & Family Therapist · Ontario, CA 91764NPI 1588792618Kelly Haus, LMFTMarriage & Family Therapist · Ontario, CA 91764NPI 1699800086Lindsey HaussamenMental Health Counselor · Ontario, CA 91764NPI 1790923027Jordyn HeckerMarriage & Family Therapist · Ontario, CA 91762NPI 1013446996Katherine Heisler, LCSWClinical Social Worker · Ontario, CA 91764NPI 1811420102Sarah Heitz, LCSWMental Health Counselor · Ontario, CA 91762NPI 1316316920Jose HernandezCounselor · Ontario, CA 91764NPI 1093044836Mirna Hernandez SaldivarClinical Social Worker · Ontario, CA 91762NPI 1154725521Blanca HerreraMental Health Counselor · Ontario, CA 91764NPI 1285818187Jason HerreraAddiction Counselor · Ontario, CA 91762NPI 1073825469Ashley HillMarriage & Family Therapist · Ontario, CA 91764NPI 1790207512Luz Howard, LVNAddiction Counselor · Ontario, CA 91762NPI 1821143330

Other provider types in Ontario

Therapists337Psychiatrists5Psychologists12Licensed Counselors169Social Workers79Marriage & Family Therapists96Addiction Counselors51

Back to page 1 · All providers in Ontario

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