City provider directory
Healthcare Providers in Ontario, CA
Active providers and organizations with a practice address in Ontario, California. Every profile includes the NPI number, specialty taxonomy, and address.
6,083
providers indexed
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Browse Ontario by specialty
Behavior Technician 2,814 Behavior Analyst 372 Counselor 259 Dentist 184 Social Worker 184 Marriage & Family Therapist 183 Student in an Organized Health Care Education/Training Program 183 Clinic/Center 126 Assistant Behavior Analyst 121 Speech-Language Pathologist 105 Nurse Practitioner 103 Specialist/Technologist 96 Pharmacist 95 Community Health Worker 67 Registered Nurse 67 Health & Wellness Coach 65 Chiropractor 53 Physician Assistant 47 Psychologist 47 Durable Medical Equipment & Medical Supplies 43
Providers in Ontario
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1669710760 | 24/7 Hospice | Organization | Community Based Hospice Care Agency | Ontario, CA |
| 1780097931 | 3lmc Premier Healthcare LLC | Organization | Home Health Agency | Ontario, CA |
| 1114473709 | 4 U Medical Transit | Organization | Non-emergency Medical Transport (VAN) | Ontario, CA |
| 1407575814 | 888 Hbreal Estate Investments Corp | Organization | Customized Equipment (DME) | Ontario, CA |
| 1396891610 | A&G Health Services Inc | Organization | Physical Therapy Clinic/Center | Ontario, CA |
| 1912238361 | A&I Advisors Inc | Organization | Local Education Agency (LEA) | Ontario, CA |
| 1881472447 | A&L Rehab Specialist Inc | Organization | Durable Medical Equipment & Medical Supplies | Ontario, CA |
| 1518741339 | Aaliyah Tate | Individual | Behavior Analyst | Ontario, CA |
| 1952023897 | Aarb Medical & Healthcare Services Inc | Organization | Health Service Clinic/Center | Ontario, CA |
| 1649053703 | Aaron Coronel | Individual | Behavior Technician | Ontario, CA |
| 1316792468 | Aaron Dempsey | Individual | Behavior Technician | Ontario, CA |
| 1235994070 | Aaron Gonzalez | Individual | Behavior Technician | Ontario, CA |
| 1144180738 | Aaron Lara | Individual | Community Health Worker | Ontario, CA |
| 1619551470 | Aaron Martinez | Individual | Behavior Technician | Ontario, CA |
| 1306434360 | Aaron May | Individual | Behavior Analyst | Ontario, CA |
| 1093623308 | Aaron Perida | Individual | Behavior Technician | Ontario, CA |
| 1922500230 | Aaron Rich | Individual | Behavior Technician | Ontario, CA |
| 1841108032 | Aaron Sanchez | Individual | Assistant Behavior Analyst | Ontario, CA |
| 1992458806 | Aaron Sharp | Individual | Behavior Technician | Ontario, CA |
| 1952186884 | Aaron Sutton | Individual | Behavior Technician | Ontario, CA |
| 1679774236 | Aaron Zia | Individual | Chiropractor | Ontario, CA |
| 1558498162 | Abbas Al Jidui | Individual | General Practice Dentistry | Ontario, CA |
| 1033938352 | Abby Armagost | Individual | Behavior Analyst | Ontario, CA |
| 1356034896 | Abel Gonzalez | Individual | Behavior Technician | Ontario, CA |
| 1316730948 | Abel Sedillo | Individual | Behavior Technician | Ontario, CA |
| 1518153733 | Abid Hameed Khan MD Professional Corporation | Organization | Nephrology Physician | Ontario, CA |
| 1326184524 | Abid Khan | Individual | Nephrology Physician | Ontario, CA |
| 1770383796 | Abigail Andrews | Individual | Behavior Technician | Ontario, CA |
| 1801777925 | Abigail Benitez | Individual | Behavior Analyst | Ontario, CA |
| 1124616123 | Abigail Hernandez | Individual | Behavior Technician | Ontario, CA |
| 1811245053 | Abigail Montes De Oca | Individual | Mental Health Counselor | Ontario, CA |
| 1952079253 | Abigail Stone | Individual | Behavior Technician | Ontario, CA |
| 1518741610 | Abigayle Baptist | Individual | Behavior Technician | Ontario, CA |
| 1871264168 | Abiodun Oshinyemi | Individual | Behavior Analyst | Ontario, CA |
| 1134971922 | Ablossom Health Care | Organization | Home Health Agency | Ontario, CA |
| 1457690901 | Abraham Mendoza | Individual | Addiction (Substance Use Disorder) Counselor | Ontario, CA |
| 1740812486 | Abriana Raya | Individual | Behavior Technician | Ontario, CA |
| 1124602370 | Abril Espinoza | Individual | Behavior Technician | Ontario, CA |
| 1891123790 | Academy Medical Equipment, Inc. | Organization | Durable Medical Equipment & Medical Supplies | Ontario, CA |
| 1184010431 | Accentcare Health Management, Inc. | Organization | Case Management Agency | Ontario, CA |
| 1629409842 | Accuquest Hearing Centers LLC | Organization | Hearing and Speech Clinic/Center | Ontario, CA |
| 1750668554 | Ace Medical Transportation, LLC | Organization | Non-emergency Medical Transport (VAN) | Ontario, CA |
| 1578220398 | Aceil Ankir | Individual | Counseling Psychologist | Ontario, CA |
| 1497309306 | Acevedo Dental Corp | Organization | Oral and Maxillofacial Surgery Clinic/Center | Ontario, CA |
| 1831494350 | Act Family Counseling Incorporated | Organization | Marriage & Family Therapist | Ontario, CA |
| 1053125583 | Ada Mbai | Individual | Medical-Surgical Registered Nurse | Ontario, CA |
| 1407434665 | Adam Malik | Individual | Psychiatry Physician | Ontario, CA |
| 1083225668 | Adam Martinez | Individual | Behavior Technician | Ontario, CA |
| 1477293264 | Adam Tapia | Individual | Behavior Technician | Ontario, CA |
| 1487259156 | Adam Vanegas | Individual | Behavior Technician | Ontario, CA |
Frequently asked questions
How many healthcare providers are in Ontario, CA?
The latest NPPES snapshot lists 6,083 active providers and organizations with a practice address in Ontario, California.
How do I look up a provider's NPI in Ontario?
Browse the list below or use the NPI search filtered to CA. Profiles show the NPI number, specialty, and practice address from NPPES.
Source: CMS NPPES (public data). Snapshot 2026-07-13.