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 9 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. Marco Castellanos, DDSDentist1396083465
  2. Mario Castellanos, DDSDentist1285927962
  3. Ernest Castigadorgayomali, FNP-CFamily Nurse Practitioner1467177923
  4. Ashley Castillo, M.S., CCC-SLPSpeech-Language Pathologist1730073412
  5. Hannah Castillo, PTPhysical Therapist1487390100
  6. Ismael Castillo, PHARM.D.Pharmacist1316247778
  7. Oswaldo CastilloLicensed Vocational Nurse1538005087
  8. Raynard CastilloPsychiatric/Mental Health Nurse Practitioner1437586047
  9. Chris Caston, LCSWClinical Social Worker1851793368
  10. Christine Castro, PHARM.D., BCPSPharmacotherapy Pharmacist1801238332
  11. Cipriano Castro, PHYSICAL THERAPISTPhysical Therapist1801336086
  12. Christina Catren, PPSSchool Counselor1376413625
  13. Sylvia Cayetano, CRNACertified Registered Nurse Anesthetist1558413906
  14. Annette CedilloCase Manager/Care Coordinator1407749229
  15. Jassmin Cedillo, M.SBehavior Technician1902780760
  16. Elizabeth Celaya-Ojeda, MDStudent in an Organized Health Care Education/Training Program1831949213
  17. Janett Ceron, LCSWClinical Social Worker1922418003
  18. Luis Cerrato, PTAPhysical Therapy Assistant1174702666
  19. Kevin Cervantes, MDStudent in an Organized Health Care Education/Training Program1104409895
  20. Matthew CervantesCase Manager/Care Coordinator1104462407
  21. Mariana Cervantes Mendez, LCSWClinical Social Worker1255665964
  22. Andrew Cha, D.OHospitalist Physician1508832940
  23. Julie Chae, R.PH.Pharmacist1477644102
  24. Stephanie Chae, MDStudent in an Organized Health Care Education/Training Program1336673995
  25. Mbebui Chafeh, PTAPhysical Medicine & Rehabilitation Physician1700778941
  26. Nitiphum ChaiyakamPharmacist1265218739
  27. Asia ChamberlainCommunity Health Worker1669296018
  28. Karen Chambers, PAPhysician Assistant1689722571
  29. Brian Chan, MDStudent in an Organized Health Care Education/Training Program1295675650
  30. Catherine Chan, PHARM.D.Pharmacist1750445136
  31. Francis Chan, PHARM.D.Pharmacist1114028339
  32. Hannah Chan, MDFamily Medicine Physician1093465791
  33. Joseph Chan, M.D.Hematology & Oncology Physician1497796189
  34. Pushkar Chand, M.D.Emergency Medicine Physician1013074582
  35. Kalika Chander, MDPsychiatry Physician1225197882
  36. Akemi Chang, MDBody Imaging Physician1831266840
  37. Benjamin ChangPsychiatry Physician1184251365
  38. Catherine Chang, PHARM DPharmacist1457632226
  39. David Chang, MDEmergency Medicine Physician1780182196
  40. Debbie Chang, M.D.Psychiatry Physician1508212499
  41. Ing ChangPhysical Therapist1073731261
  42. Julius ChangPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1962769273
  43. Nolan Chang, MDFamily Medicine Physician1134296130
  44. Patrick Chang, PHARM DPharmacist1538250238
  45. Richard Chang, M.D.Pediatrics Physician1831195882
  46. Sheng-Chieh Chang, MDAnesthesiology Physician1710418298
  47. Walter Chang, MDSurgery of the Hand (Surgery) Physician1083781835
  48. Winnie ChangEmergency Medicine Physician1316139405
  49. Yoon Chang, RPHPharmacist1831560192
  50. Yu Chang, RPHPharmacist1073027397

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.