NPI
NPIs in Ontario, CA
6,187 records in the October 12, 2026 NPPES file. Search a name, or open a place below.
This search stays in California.
License: a US government work, in the public domain (Public Domain Mark 1.0).
Run it in Rivvi
Every provider of one specialty near your ZIP
Active individuals and group practices from the NPI registry, grouped by practice address, as a spreadsheet.
Free to start. Opens Rivvi, the AI workspace for healthcare teams.
Records
- 1124710785Gabriella Acosta · Active · Behavior Technician · 1500 S Haven Ave · Ontario CA 91761 · (909) 749-5204
- 1164124590Jennifer Acosta · Active · Behavior Technician · 337 N Vineyard Ave Ste 301 · Ontario CA 91764 · (866) 727-8274
- 1457222911Rebekah Acosta, RDN · Active · Dietitian, Registered · 423 N Berlyn Ave · Ontario CA 91764 · (909) 994-0014
- 1083567416Stephanie Acosta, SLP · Active · Speech-Language Pathologist · 950 W D St · Ontario CA 91762 · (909) 459-2500
- 1831494350Act Family Counseling Incorporated · Active · Marriage & Family Therapist · 2545 S Euclid Ave · Ontario CA 91762 · (909) 983-5575
- 1487955746Christopher Adair, M.A. · Active · Counselor, Mental Health · 2990 Inland Empire Blvd Ste 101 · Ontario CA 91764 · (909) 980-3427
- 1467180562Sierra Adame · Active · Behavior Technician · 4688 Ontario Mills Pkwy · Ontario CA 91764 · (909) 476-5747
- 1013575117Nori Adame-Ramirez · Active · Behavior Technician · 3602 Inland Empire Blvd Ste B208 · Ontario CA 91764 · (909) 476-6464
- 1497569370Azzuree Adams · Active · Behavior Technician · 3333 Concours St, Suite 4102 · Ontario CA 91764 · (909) 240-1764
- 1689436339Camille Adams · Active · Behavior Analyst · 4688 Ontario Mills Pkwy · Ontario CA 91764 · (510) 277-5161
- 1023905395Chaz Adams · Active · Behavior Technician · 3045 S Archibald Ave Ste H-1043 · Ontario CA 91761 · (855) 832-6727
- 1770238867Miledi Adams · Active · Behavior Technician · 2930 Inland Empire Blvd Ste 101 · Ontario CA 91764 · (909) 483-5000
- 1811839160Roxanna Adams · Active · Behavior Technician · 3257 E Guasti Rd Ste 210 · Ontario CA 91761 · (866) 727-8274
- 1477176857Takeira Adams, BCBA · Active · Behavior Analyst · 4200 Jurupa St Ste 308 · Ontario CA 91761 · (909) 259-5600
- 1467102939Trinity Adams · Active · Behavior Technician · 3333 Concours · Ontario CA 91764 · (909) 240-1764
- 1083492300Rachel Adamson · Active · Behavior Technician · 337 N Vineyard Ave Ste 301 · Ontario CA 91764 · (866) 727-8274
- 1912272733Sheila Marie Adan, D.O. · Active · Family Medicine · 2295 S Vineyard Ave · Ontario CA 91761 · (909) 724-5000
- 1437658929Mary Adetula · Active · Registered Nurse · 2940 Inland Empire Blvd · Ontario CA 91764 · (909) 458-1350
- 1528606670Oluwaseyi Adeyinka · Active · Behavior Analyst · 3846 S Silver Oak Way · Ontario CA 91761 · (626) 251-7391
- 1093476830Barbara Adkins · Active · Behavior Technician · 1500 S Haven Ave Ste 250 · Ontario CA 91761 · (909) 749-5204
- 1972465664Adni Cs LLC · Active · Clinic/Center · 1650 S Campus Ave Apt 7 · Ontario CA 91761 · (562) 316-7621
- 1306265863Advance Hospice Services, Inc. · Active · Hospice Care, Community Based · 3602 Inland Empire Blvd Ste A-238 · Ontario CA 91764 · (909) 466-1000
- 1073494183Advocates for Medical Expansion · Active · Voluntary or Charitable · 3010 E Sussex Privado · Ontario CA 91762 · (626) 672-9003
- 1417118282Aegis Medical Systems, Inc. · Active · Case Management · 125 W F St · Ontario CA 91762 · (909) 986-4506
- 1013353861Aegis Treatment Centers, LLC · Active · Clinic/Center, Methadone Clinic · 125 W F St, Suite 101 · Ontario CA 91762 · (909) 986-4550
- 1275698615Aegis Treatment Centers, LLC · Active · Clinic/Center, Methadone Clinic · 125 W F St · Ontario CA 91762 · (909) 986-4550
- 1043101165Aero Mobility, Inc. · Active · Prosthetic/Orthotic Supplier · 3200 E Guasti Rd Ste 126 · Ontario CA 91761 · (909) 623-1000
- 1174975155Ilse Aerts · Active · Marriage & Family Therapist · 3633 Inland Empire Blvd Ste 777 · Ontario CA 91764 · (909) 295-5805
- 1093811143Afa Consulting Corporation · Active · Durable Medical Equipment & Medical Supplies · 4055 E Guasti Rd, #107 · Ontario CA 91761 · (909) 390-1358
- 1861175085Pegah Agahzadeh Kesheh, MA · Active · Assistant Behavior Analyst · 4688 Ontario Mills Pkwy · Ontario CA 91764 · (657) 207-5542
- 1174297691Victoria Agbelusi · Active · Behavior Analyst · 4688 Ontario Mills Pkwy · Ontario CA 91764 · (714) 834-1111
- 1033829478Ageless Health Group, A Professional Corp Nursing · Active · Clinic/Center, Multi-Specialty · 703 E E St · Ontario CA 91764 · (909) 435-4707
- 1962012997Eliza Agredano · Active · Behavior Technician · 1500 S Haven Ave Ste 250 · Ontario CA 91761 · (909) 749-5204
- 1356262422Mary Liza Agsalud · Active · Doula · 211 W Emporia St Unit 103 · Ontario CA 91762 · (909) 734-8057
- 1447069067Evelyn Aguayo · Active · Behavior Technician · 4688 Ontario Mills Pkwy · Ontario CA 91764 · (909) 476-5747
Specialties
- Behavior Technicians2,872
- Behavior Analyst providers374
- Marriage and Family Therapists183
- Student in an Organized Health Care Education/Training Program providers178
- Clinical Social Workers149
- Assistant Behavior Analyst providers125
- Speech-Language Pathologists106
- Addiction Counselors105
- General Dentists92
- Pharmacists89
- Specialist/Technologist, Speech-Language Assistant providers87
- Mental Health Counselors85
- Dentists81
- Health & Wellness Coach providers68
- Community Health Workers67
- Family Nurse Practitioners54
- Chiropractors45
- Durable Medical Equipment & Medical Supplies providers44
70 more specialties. Show all
- Case Manager/Care Coordinator providers42
- Physical Therapists39
- Physician Assistants39
- Social Workers39
- Family Medicine Doctors38
- Home Health providers36
- Hospice Care, Community Based providers35
- Rehabilitation Practitioners35
- Counselors32
- Optometrists32
- School Counselors31
- Registered Nurses31
- Non-emergency Medical Transport providers30
- Occupational Therapists29
- Licensed Vocational Nurses28
- Clinic/Center, Dental providers24
- Psychiatric Nurse Practitioners21
- Peer Specialists21
- Doulas20
- Nurse Practitioners18
- School Registered Nurses18
- Pharmacy, Community/Retail Pharmacy providers17
- Acupuncturists16
- Internal Medicine Doctors16
- School Psychologists16
- Clinic/Center, Urgent Care providers15
- Massage Therapists15
- Specialists15
- Clinic/Center providers14
- Clinic/Center, Mental Health providers14
- In Home Supportive Care providers14
- Community/Behavioral Health providers13
- General Practitioners13
- Physical Therapy Assistants13
- Podiatrists13
- Psychologists13
- Clinical Psychologists13
- Day Training/Habilitation Specialist providers12
- Pediatricians12
- Psychiatrists12
- Clinical Medical Laboratory providers11
- Licensed Psychiatric Technicians11
- Skilled Nursing Facility providers11
- Registered Dietitians10
- Orthopedic Surgeons9
- Specialist/Technologist, Athletic Trainer providers9
- Health Educators8
- Pharmacy providers8
- Medical Physician Assistants8
- Assisted Living Facility providers7
- Case Management providers7
- Clinic/Center, Ambulatory Surgical providers7
- Clinic/Center, End-Stage Renal Disease Treatment providers7
- Clinic/Center, Health Services providers7
- Primary Care Nurse Practitioners7
- Pediatrics Occupational Therapists7
- Occupational Therapy Assistants7
- Prosthetic/Orthotic Supplier providers7
- Residential Treatment Facility, Intellectual and/or Developmental Disabilities providers7
- General Surgeons7
- Professional Counselors6
- Pediatric Dentists6
- Local Education Agency providers6
- Registered Nurses6
- Anesthesiologists5
- Clinic/Center, Federally Qualified Health Center providers5
- Clinic/Center, Primary Care providers5
- Eyewear Suppliers5
- Radiologists5
- Attendant Care Provider Technicians5
Nearby cities
Related
Source: NPPES NPI Registry, data as of October 12, 2026. Last updated October 12, 2026. How we source data. Corrections: hello@rivvi.ai.