ZIP DIRECTORY
Healthcare Providers in ZIP 91761 - Ontario, California
Browse all registered healthcare providers in ZIP 91761 (Ontario, California)
Total Providers
2,590
Provider Type Split
👨⚕️ Indiv: 2,376🏥 Org: 214
Top Specialty
Behavior Technician (1477)
📊 Healthcare Market Snapshot for ZIP 91761
Total Active Providers2,590Registered in ZIP 91761
Individual vs Organization👨⚕️ Indiv: 2,376 (92%)🏥 Org: 214 (8%)
Specialties Represented158Distinct medical categories
Top SpecialtyBehavior Technician1,477 providers (57%)
Showing 20 providers per pageShowing 1 - 20 of 2,590 providers
Longest-Registered Providers in ZIP 91761
Providers with the most years of registration history in ZIP 91761
Hope Santiago, NP
Nurse Practitioner•Registered since 2005
Barry Bricca, MS
Audiologist•Registered since 2005
County Of San Bernardino
Specialty not listed•Registered since 2006
Liwanag Asuncion, M.D
Internal Medicine•Registered since 2006
David Hirota, M.D
Internal Medicine•Registered since 2006
Recently Registered Providers in ZIP 91761
Newly registered healthcare providers practicing in ZIP 91761
Lilia Perez-martinez
Behavior Technician•Registered since 2026
Chelsey Andrew
Behavior Technician•Registered since 2026
Alexis Rangel
Specialty not listed•Registered since 2026
Browse by Specialty in ZIP 91761
Behavior Technician1,477 providersSpecialty not listed124 providersSpecialty not listed72 providersMarriage & Family Therapist64 providersBehavior Analyst60 providersSpeech-Language Pathologist54 providersMental Health Counselor52 providersClinical Social Worker46 providersPharmacist44 providersCommunity Health Worker26 providersCase Manager25 providersPhysical Therapy24 providers
Other ZIP Codes in Ontario
Explore other medical service areas within Ontario
Frequently Asked Questions about Providers in ZIP 91761
How many healthcare providers are in ZIP Code 91761 (Ontario, CA)?
There are 2,590 registered healthcare providers in ZIP Code 91761 (Ontario, CA) according to the latest NPI registry database.
What is the most common healthcare specialty in ZIP Code 91761?
The most common healthcare specialty in ZIP Code 91761 is Behavior Technician with 1,477 registered providers.
What is the oldest registered healthcare provider in ZIP 91761?
The oldest registered healthcare provider in ZIP 91761 is Hope Santiago, NP, who registered on 09/26/2005 (NPI: 1245226000).