NPPES file of Aug 9, 2026

Doctors and health care providers in Fontana, CA

3,012 individual NPPES records list a practice address in Fontana, 77th of 812 California cities. The largest group is pharmacist: 227, 8% of the city's records, against 3% across California. Page 3 of 61.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Fontana in California

  • Rank in California77th of 812 cities by records
  • Share of the state0.3% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups20.5% of all records

Compared with California as a whole, Fontana has 7.8× the state's share of certified registered nurse anesthetist records and 0.26× its share of behavior technician records.

Providers in Fontana, alphabetically

  1. Karina Amador, MSWSocial Worker1063937274
  2. Nancy Amarin, LCSWClinical Social Worker1588309306
  3. Lisa AmatoPsychiatric/Mental Health Registered Nurse1740756329
  4. Felipe Amaya, LCSWClinical Social Worker1083367585
  5. Syeda AmeenaInternal Medicine Physician1972998706
  6. Wendy Amezcua, PAMedical Physician Assistant1982854865
  7. Nkiruka AnakorPsychiatric/Mental Health Nurse Practitioner1215662101
  8. Sumeet Anand, D.O.Family Medicine Physician1487922712
  9. Katerina-Elena Ananiades, MDFamily Medicine Physician1669602132
  10. Amber AnayaStudent in an Organized Health Care Education/Training Program1184408767
  11. Peyman Andalib, MDStudent in an Organized Health Care Education/Training Program1104028000
  12. Floyd Andersen, MDInternal Medicine Physician1760530752
  13. Austin Anderson, MDStudent in an Organized Health Care Education/Training Program1669969044
  14. David Anderson, MDNeuromusculoskeletal Medicine & OMM Physician1871660688
  15. Kristen AndersonCertified Registered Nurse Anesthetist1215314984
  16. Margarita Andrada, BCBABehavior Analyst1588177083
  17. Patsy Andrada, MSW, LISWClinical Social Worker1801165162
  18. Diana AndrawesPharmacist1831853258
  19. Esteban Andryjowicz, MDObstetrics & Gynecology Physician1275681058
  20. Dorcas Ang, MDInternal Medicine Physician1508914417
  21. Adrian AngeloCommunity Health Worker1619847506
  22. Esther AnguianoSchool Counselor1639964075
  23. Hector Anguiano, MDObstetrics & Gynecology Physician1902954860
  24. Eberechi Ani, FNP-BCPsychiatric/Mental Health Nurse Practitioner1801332051
  25. Ifeoma Anidi, MDPediatrics Physician1699846626
  26. Isaac Antonio, LVNLicensed Vocational Nurse1770450868
  27. Princewill AnuchaRegistered Respiratory Therapist1669950564
  28. Melissa AparicioBehavior Technician1447039797
  29. Lesley Apodaca, LCSWClinical Social Worker1720912173
  30. Wasil Aqil, D.OFamily Medicine Physician1659535318
  31. Leslie Aquino-Peralta, MDPediatrics Physician1033280938
  32. Gerald ArafolOccupational Therapist1134315666
  33. Celine Aragon, FNP-BCFamily Nurse Practitioner1194686113
  34. Janay AragonezRehabilitation Practitioner1841148814
  35. Craig Arakaki, MDCritical Care Medicine (Internal Medicine) Physician1306913223
  36. Arielle ArambulaSocial Worker1699236083
  37. Marvin Arana GarciaDriver1871162511
  38. Julie Aranda, RDNRegistered Dietitian1801320593
  39. Napoleon AraujoCommunity Health Worker1205714433
  40. Jocelyn Arbaiza, DCChiropractor1083560767
  41. Arlene Arcega, ODOptometrist1093882839
  42. Terrin Arceo, DOPsychiatry Physician1104520485
  43. Jayne ArchibaldCounselor1760997852
  44. Jose Arciniega, D.O.Family Medicine Physician1265642052
  45. Diann Ardessi, O.T.Occupational Therapist1306179650
  46. Lovie Jay Arguelles, PTPhysical Therapist1457472920
  47. Michelle Arguelles, MPTPhysical Therapist1366598450
  48. Elizabeth AriasBehavior Technician1891478053
  49. Candace ArmendarizLicensed Vocational Nurse1902572514
  50. Cristian Armenta IbarraOccupational Therapy Assistant1003467929

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

Fontana, California appears in the CMS National Plan and Provider Enumeration System with 3,012 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 Fontana - 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 Fontana 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 Fontana is weighted toward Pharmacist (227 clinicians, followed by Family Medicine Physician with 198 and Student in an Organized Health Care Education/Training Program with 193). 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, Fontana reports roughly 7.7 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.

Of California's most common specialties, Mental Health Counselor is the most prominent one with no provider currently listing a Fontana practice address, a coverage gap Fontana patients typically fill by traveling to a larger nearby hub.

For Fontana 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 Fontana, CA?

There are 3,012 registered healthcare providers in Fontana, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Fontana?

The most common specialties in Fontana are Pharmacist, Family Medicine Physician, Student in an Organized Health Care Education/Training Program, Behavior Technician, Internal Medicine Physician. Pharmacist has the most providers with 227.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.