Registry data as of Aug 27, 2026

Doctors and health care providers in Rialto, CA

1,044 individual NPPES records list a Rialto practice address, 180th of 812 California cities. The largest group is behavior technician: 133, 13% of the city's records, against 18% across California.

CMS NPPES registry, loaded Aug 27, 2026 · method · Verify with CMS →

Compiled from official public sources by the editorial process.

Rialto in California

  • Rank in California180th of 812 cities by records
  • Share of the state0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups25.9% of all records
  • Behavior Technician rank11th of the 10 California cities with the most

Compared with California as a whole, Rialto has 4.5× the state's share of licensed psychiatric technician records and 0.32× its share of student in an organized health care education/training program records.

Providers in Rialto, alphabetically

  1. Tonia Abanise, RNRegistered Nurse1700620929
  2. Maria AbdoBehavior Technician1790659084
  3. Salvador Abiera, D.P.T., P.T.Physical Therapist1760494843
  4. Sarah AcostaRehabilitation Practitioner1144763533
  5. Brenda Adams, MFTMental Health Counselor1871633586
  6. Olga Adan, M.D.Pediatrics Physician1447206073
  7. Roxanne AguayoBehavior Technician1881469393
  8. Daniela AguilarCounselor1649617432
  9. Rebecca AguilarMental Health Counselor1912373549
  10. Robert AguilarDay Training/Habilitation Specialist1700446614
  11. Olga Aguinaga, DDS INCGeneral Practice Dentistry1801804141
  12. Beverly Aguirre, MASTER SOCIAL WORKRehabilitation Practitioner1992153647
  13. Henry Agyeman-DuahMental Health Counselor1750241220
  14. Farhat Ahmed, PHARMACISTPharmacist1952615676
  15. Aaron Ajoku, D.C.,Chiropractor1043509243
  16. Sarmad Al Azeez, DDSGeneral Practice Dentistry1326764457
  17. Angela Alari, ALPCCMental Health Counselor1699462390
  18. Parvaneh Alboughobaish, LMFTMental Health Counselor1649462789
  19. Adrienne AlcantaraOccupational Therapist1902461718
  20. Mariam Aldaz, M.S. LMFTMarriage & Family Therapist1548392384
  21. Noryeli AldersonRegistered Nurse1538987201
  22. Natasha Alexander, MDInternal Medicine Physician1255615530
  23. Tristin AlfredClinical Social Worker1700043775
  24. Cindy Allen, CATCAddiction (Substance Use Disorder) Counselor1053520668
  25. Gary AllenPsychiatric/Mental Health Registered Nurse1831674175
  26. Teneil AllenBehavior Technician1699245225
  27. Alejandro AlonsoBehavior Technician1447002829
  28. Maria Nenita AloroNursing Home Administrator1538940499
  29. Chong Altenburg, RDHAPDental Hygienist1285999375
  30. Alice AlvarezMental Health Counselor1932500568
  31. Brittney AlvarezBehavior Technician1427642198
  32. Lilia AlvarezDay Training/Habilitation Specialist1255193520
  33. Michael Alvarez, DDSDentist1174530927
  34. Michael Alvarez, PA-CPhysician Assistant1922811207
  35. Christina AlvesMarriage & Family Therapist1295081156
  36. Dianna Ambartsumyan, PHARM. DPharmacist1598254609
  37. Daniel Aminpour, MDStudent in an Organized Health Care Education/Training Program1255960050
  38. Marlene Anceno, LCSWClinical Social Worker1699228205
  39. Melinda Ancrum, LCSWClinical Social Worker1922140573
  40. Michael AndersonBehavior Analyst1548641269
  41. Terrye Anderson, NPFamily Nurse Practitioner1093014839
  42. Holly AndradeCommunity Health Worker1689449563
  43. Karen AndradeMarriage & Family Therapist1093347155
  44. Yaritza AnguianoBehavior Technician1740135706
  45. William AninLicensed Psychiatric Technician1558930586
  46. Anthonia Anyakora-OkaforRegistered Nurse1306437231
  47. Sofia AparicioBehavior Technician1972469534
  48. Maria AponteInterpreter1598914723
  49. Myriam Aragon, M.A.Marriage & Family Therapist1942216304
  50. Anna ArballoCase Manager/Care Coordinator1649757519

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Rialto, California appears in the CMS National Plan and Provider Enumeration System with 1,044 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Rialto - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Rialto practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Rialto is weighted toward Behavior Technician (133 clinicians, followed by Marriage & Family Therapist with 73 and Mental Health Counselor with 64). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to California's population, Rialto reports roughly 2.7 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

For Rialto patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Rialto, CA?

There are 1,044 registered healthcare providers in Rialto, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Rialto?

The most common specialties in Rialto are Behavior Technician, Marriage & Family Therapist, Mental Health Counselor, Community Health Worker, Clinical Social Worker. Behavior Technician has the most providers with 133.

Source: CMS National Plan and Provider Enumeration System (NPPES), file loaded Aug 27, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.