Healthcare Providers in Ontario, CA
5,896 active providers and organizations list a practice address in Ontario, California in the latest NPPES snapshot. Every profile includes the NPI number, specialty taxonomy, and address.
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Browse Ontario by specialty
- Behavior Technician in Ontario (2,728)
- Behavior Analyst in Ontario (366)
- Counselor in Ontario (260)
- Dentist in Ontario (182)
- Marriage & Family Therapist in Ontario (181)
- Social Worker in Ontario (177)
- Student in an Organized Health Care Education/Training Program in Ontario (163)
- Clinic/Center in Ontario (122)
- Assistant Behavior Analyst in Ontario (113)
- Nurse Practitioner in Ontario (103)
- Speech-Language Pathologist in Ontario (103)
- Pharmacist in Ontario (95)
- Specialist/Technologist in Ontario (93)
- Health & Wellness Coach in Ontario (66)
- Community Health Worker in Ontario (64)
- Registered Nurse in Ontario (64)
- Chiropractor in Ontario (53)
- Physician Assistant in Ontario (46)
- Psychologist in Ontario (45)
- Case Manager/Care Coordinator in Ontario (42)
Providers in Ontario
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1396891610 | A&G Health Services Inc | Organization | Physical Therapy Clinic/Center | Ontario, CA |
| 1679774236 | Aaron Zia | Individual | Chiropractor | Ontario, CA |
| 1558498162 | Abbas Al Jidui | Individual | General Practice Dentistry | Ontario, CA |
| 1518153733 | Abid Hameed Khan MD Professional Corporation | Organization | Nephrology Physician | Ontario, CA |
| 1326184524 | Abid Khan | Individual | Nephrology Physician | Ontario, CA |
| 1275698615 | Aegis Treatment Centers, LLC | Organization | Methadone Clinic | Ontario, CA |
| 1093811143 | Afa Consulting Corporation | Organization | Durable Medical Equipment & Medical Supplies | Ontario, CA |
| 1922924265 | Aleah Rodriguez | Individual | Behavior Technician | Ontario, CA |
| 1609080316 | Alexander A. Galvan Dmd | Organization | Dentist | Ontario, CA |
| 1467504944 | Ali Shahzad Ghajar | Individual | General Practice Dentistry | Ontario, CA |
| 1598812190 | Alicia Marin | Individual | Chiropractor | Ontario, CA |
| 1164510947 | Allcare Health Services, Inc | Organization | Home Health Agency | Ontario, CA |
| 1699730291 | Alliance Medical Equipment & Resp. Pharmacy, Inc | Organization | Pharmacy | Ontario, CA |
| 1548187495 | Alyssa Chavez | Individual | Behavior Technician | Ontario, CA |
| 1659551695 | American Current Care of California, A Medical Corporation | Organization | Urgent Care Clinic/Center | Ontario, CA |
| 1396926523 | American Current Care of California, A Medical Corporation | Organization | Urgent Care Clinic/Center | Ontario, CA |
| 1043423742 | Amexus Mexico Inc. | Organization | Dentist | Ontario, CA |
| 1780797092 | Amy Zonoozi | Individual | General Practice Dentistry | Ontario, CA |
| 1730245218 | Ana Rios | Individual | General Practice Dentistry | Ontario, CA |
| 1891890026 | Andrew Miles | Individual | Chiropractor | Ontario, CA |
| 1619189263 | Antoine Haggar | Individual | Dentist | Ontario, CA |
| 1740386754 | Antonio Rodriguez | Individual | Pharmacist | Ontario, CA |
| 1942127048 | Ariyah Perry | Individual | Community Health Worker | Ontario, CA |
| 1548330442 | Armando Babcock | Individual | Chiropractor | Ontario, CA |
| 1043267206 | Assure Healthcare Services. Inc. | Organization | Home Health Agency | Ontario, CA |
| 1679666507 | Asterio Galvan | Individual | General Practice Dentistry | Ontario, CA |
| 1801089719 | Beatriz Ornelas | Individual | Clinical Social Worker | Ontario, CA |
| 1043207384 | Bella Vista Operating Company Inc | Organization | Skilled Nursing Facility | Ontario, CA |
| 1760440267 | Bertrand Janne D'Othee | Individual | Diagnostic Radiology Physician | Ontario, CA |
| 1952330888 | Betty Garner | Individual | Adult Health Nurse Practitioner | Ontario, CA |
| 1538136460 | Beverly Nishitani | Individual | Optometrist | Ontario, CA |
| 1164394060 | Blakemore Inspired Wellness, Marriage and Family Services, PC. | Organization | Mental Health Counselor | Ontario, CA |
| 1528031788 | Blanca Esparza | Individual | General Practice Dentistry | Ontario, CA |
| 1275586919 | Brad Katzman | Individual | Foot & Ankle Surgery Podiatrist | Ontario, CA |
| 1134245483 | Brett Diaz | Individual | Chiropractor | Ontario, CA |
| 1932227626 | Brian Lee | Individual | General Practice Physician | Ontario, CA |
| 1225156706 | Brian Min | Individual | Pharmacist | Ontario, CA |
| 1144355694 | Brijesh Patel | Individual | Chiropractor | Ontario, CA |
| 1679616528 | Broadwater Bella Vista Care Center, LLC | Organization | Skilled Nursing Facility | Ontario, CA |
| 1316080260 | Broadwater Ontario Care Center, LLC | Organization | Skilled Nursing Facility | Ontario, CA |
| 1538282991 | Bryn Barkan | Individual | Clinical Social Worker | Ontario, CA |
| 1598841934 | Cal Med Ambulance LLC | Organization | Ambulance | Ontario, CA |
| 1043242142 | California Medical Clinic Inc. | Organization | Family Medicine Physician | Ontario, CA |
| 1417145384 | Carmen Perryman | Individual | Clinical Social Worker | Ontario, CA |
| 1780745448 | Catareya Liep | Individual | Pediatrics Physician | Ontario, CA |
| 1093834491 | Catherine Walsh | Individual | Plastic Surgery Physician | Ontario, CA |
| 1568554194 | Cathleen Manusia | Individual | Nurse Practitioner | Ontario, CA |
| 1629191184 | Cecilia Johnson | Individual | Clinical Social Worker | Ontario, CA |
| 1639137938 | Centrelake Medical Group, Inc. | Organization | Diagnostic Radiology Physician | Ontario, CA |
| 1518150333 | Chaffey Joint Union High School District | Organization | Local Education Agency (LEA) | Ontario, CA |
Frequently asked questions
How many healthcare providers are in Ontario, CA?
The latest NPPES snapshot lists 5,896 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 2026-07-10.