Find a Doctor in Ontario, CA

1,926 providers across 54 specialties with a registered practice address in Ontario.

Specialties in Ontario

Behavior Analysts371 in Ontario Counselors258 in Ontario Social Workers186 in Ontario Marriage & Family Therapists185 in Ontario Speech Therapists106 in Ontario Pharmacists89 in Ontario Mental Health Counselors85 in Ontario Dentists81 in Ontario Psychologists48 in Ontario Chiropractors46 in Ontario Physical Therapists39 in Ontario Family Doctors38 in Ontario Physician Assistants38 in Ontario Home Health Agencies36 in Ontario Hospices35 in Ontario Optometrists33 in Ontario Occupational Therapists28 in Ontario Psychiatric Nurse Practitioners20 in Ontario Nurse Practitioners18 in Ontario Acupuncturists16 in Ontario Internal Medicine Doctors16 in Ontario Massage Therapists13 in Ontario Mental Health Clinics13 in Ontario Pediatricians12 in Ontario Psychiatrists12 in Ontario Dietitians11 in Ontario Nursing Homes11 in Ontario Urgent Care Clinics10 in Ontario Orthopedic Surgeons9 in Ontario Surgeons7 in Ontario Dialysis Centers7 in Ontario Anesthesiologists5 in Ontario Radiologists5 in Ontario Community Health Centers5 in Ontario Nephrologists4 in Ontario Podiatrists4 in Ontario Orthodontists3 in Ontario Geriatricians2 in Ontario OB-GYNs2 in Ontario Ophthalmologists2 in Ontario Neurologists2 in Ontario Urologists2 in Ontario Hospitals2 in Ontario Dermatologists1 in Ontario Emergency Medicine Doctors1 in Ontario Sports Medicine Doctors1 in Ontario Cardiologists1 in Ontario Pulmonologists1 in Ontario Rheumatologists1 in Ontario Neurosurgeons1 in Ontario Pathologists1 in Ontario Hospitalists1 in Ontario Audiologists1 in Ontario Nurse Anesthetists1 in Ontario

Nearby cities

Upland1,679 providers · 2 mi Chino998 providers · 4 mi Rancho Cucamonga2,700 providers · 4 mi Pomona2,327 providers · 6 mi Chino Hills584 providers · 8 mi Eastvale220 providers · 8 mi Diamond Bar546 providers · 9 mi Fontana2,078 providers · 13 mi

Counts reflect providers in the national provider registry whose registered practice address is in Ontario, CA. Provider details shown on specialty pages come from public records; always confirm directly with the provider's office.