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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 51–100 of 337Sorted by last name
Rena CantuAddiction Counselor · Ontario, CA 91764NPI 1144432162Frankee Carlin, LMFTMarriage & Family Therapist · Ontario, CA 91761NPI 1164870374Elizabeth CarranzaMental Health Counselor · Ontario, CA 91762NPI 1578019030Marytona Carreon-CastilloMental Health Counselor · Ontario, CA 91762NPI 1831479153Kirsten Carter, LCSWClinical Social Worker · Ontario, CA 91761NPI 1316363054Fabiola CastellanosCounselor · Ontario, CA 91762NPI 1457657819Christina Castro, LCSWMental Health Counselor · Ontario, CA 91761NPI 1548401219Christina Cazares, MSWClinical Social Worker · Ontario, CA 91761NPI 1578834818Rachel ChambersAddiction Counselor · Ontario, CA 91762NPI 1386160075Kevin ChandlerAddiction Counselor · Ontario, CA 91761NPI 1326399510Lorena ChangAddiction Counselor · Ontario, CA 91762NPI 1215371703May-Ling ChangClinical Social Worker · Ontario, CA 91761NPI 1548753775Carlos ChavezAddiction Counselor · Ontario, CA 91762NPI 1730398413Sal Chavez, MFTMarriage & Family Therapist · Ontario, CA 91762NPI 1619151594Sandra ChavezMental Health Counselor · Ontario, CA 91764NPI 1073800751Sonia ChavezMarriage & Family Therapist · Ontario, CA 91761NPI 1922428317Matthew ChoiProfessional Counselor · Ontario, CA 91762NPI 1134667223Sherry Christensen, LCSWClinical Social Worker · Ontario, CA 91762NPI 1629191093Kelli Clayton, MSMarriage & Family Therapist · Ontario, CA 91761NPI 1922263250Lonnell ColeCounselor · Ontario, CA 91764NPI 1942588405Kathane Coleman, MAMarriage & Family Therapist · Ontario, CA 91762NPI 1801296918Heather ConnorsCounselor · Ontario, CA 91764NPI 1184905564Gladys Corado, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1215186960Steve CorsaroAddiction Counselor · Ontario, CA 91762NPI 1619126463Gregory Crawford, PsyDClinical Neuropsychologist · Ontario, CA 91764NPI 1427310937Norman CroomAddiction Counselor · Ontario, CA 91761NPI 1871636233Treiana Crossley, IMFMarriage & Family Therapist · Ontario, CA 91762NPI 1598199762Richard Croyt, LMFTMarriage & Family Therapist · Ontario, CA 91761NPI 1639212152Frances Cummings, MFTIMarriage & Family Therapist · Ontario, CA 91764NPI 1114066529Cynthia Curbow, LCSWClinical Social Worker · Ontario, CA 91761NPI 1619005071Marilyn Curry-A-Keaton Ma. Ms, MFTIMental Health Counselor · Ontario, CA 91761NPI 1285762096Dianna Cushing-OganCounselor · Ontario, CA 91764NPI 1093856171Sean CuypersMarriage & Family Therapist · Ontario, CA 91762NPI 1841607017Lilly DamenMental Health Counselor · Ontario, CA 91762NPI 1952735128Jason Darr, LMFTMarriage & Family Therapist · Ontario, CA 91762NPI 1558689786Goleania DarrettAddiction Counselor · Ontario, CA 91764NPI 1003146416Kelline Deespinosa, PsyDClinical Psychologist · Ontario, CA 91764NPI 1407981541Luis Deleon, MSMarriage & Family Therapist · Ontario, CA 91764NPI 1255587259Stephen DeleonardisAddiction Counselor · Ontario, CA 91762NPI 1043620891Vanesa DelfinoClinical Social Worker · Ontario, CA 91762NPI 1487088134Alba Delgadillo- ParamoMarriage & Family Therapist · Ontario, CA 91764NPI 1871919209Jonathan Delgado, MSWMental Health Counselor · Ontario, CA 91762NPI 1689713216Christine Denstaedt, MFTIMarriage & Family Therapist · Ontario, CA 91761NPI 1740562792Savina Dias, LMFTMarriage & Family Therapist · Ontario, CA 91761NPI 1598916066Rommel Rock DivinagraciaMental Health Counselor · Ontario, CA 91761NPI 1952701070Michael Ehrig, MFTIMarriage & Family Therapist · Ontario, CA 91762NPI 1790204246Alexandra EngenAddiction Counselor · Ontario, CA 91761NPI 1669918397Alejandra EnriquezClinical Social Worker · Ontario, CA 91762NPI 1265867261Joel Erickson, SWIIMental Health Counselor · Ontario, CA 91764NPI 1134258742Virginia Escoto-Gonzalez, LMFTMarriage & Family Therapist · Ontario, CA 91761NPI 1548403322

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