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 20 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. Bruce Grill, MDPediatric Gastroenterology Physician1649347584
  2. Russell GroenheimSchool Counselor1932078318
  3. Mary GrovesNeurorehabilitation Occupational Therapist1568685212
  4. Maxwell Gu, MDStudent in an Organized Health Care Education/Training Program1508668534
  5. Alana Guatimea LearyPeer Specialist1801412069
  6. Kevin Guber, M.D.Child & Adolescent Psychiatry Physician1740443928
  7. Ericka Guerrero, MSW, LCSW, PPSCClinical Social Worker1174041974
  8. Isabel GuerreroCounselor1275170003
  9. Katherine GuerreroSchool Counselor1053275107
  10. Maria Guerrero, PHARM DPharmacist1053677526
  11. Patricia GuevaraLicensed Psychiatric Technician1417582461
  12. Sharlyn Guillema, PHARM.D.Pharmacist1780758268
  13. Cindy Gulley, PAPhysician Assistant1265509012
  14. Emily Gunz, MDFamily Medicine Physician1134682255
  15. Yujian Guo, M.D.Neurology Physician1063680023
  16. Arun Gupta, D.D.S.General Practice Dentistry1043488117
  17. Jugal Gupta, DDSGeneral Practice Dentistry1033212592
  18. Ravinder Gupta, D.D.S.General Practice Dentistry1427363001
  19. Shikha Gupta, RPHPharmacist1871937425
  20. Shilpa Gupta, D.D.SGeneral Practice Dentistry1750419578
  21. Cynthia Gutierrez, RDRegistered Dietitian1801919675
  22. Leanne Gutierrez, OTD, OTR/LPediatric Occupational Therapist1154263929
  23. Aliza GuzmanMassage Therapist1508746058
  24. Ashley Guzman, FNP-CFamily Nurse Practitioner1194208744
  25. Veronica GuzmanOccupational Therapy Assistant1083300354
  26. Xochitl Guzman, RNHome Health Registered Nurse1376310615
  27. Hao Ha, PHARMDPharmacist1225414311
  28. Amy Haager, PAPhysician Assistant1609943455
  29. Dorothy HaasSpeech-Language Pathologist1457574071
  30. Jasmine Haddad, MDPsychiatry Physician1093566028
  31. Leann Haddad, CNMAdvanced Practice Midwife1316706294
  32. Sandra Haddad, DDSGeneral Practice Dentistry1982426037
  33. Cava Hadikusumo, PHARM.D.Pharmacist1437222866
  34. Stephanie HadimuliaPhysician Assistant1619703477
  35. David Haga, CRNACertified Registered Nurse Anesthetist1235206079
  36. Hushang Haghighat, MDPediatric Hematology & Oncology Physician1619029089
  37. Selam Hagos, RNGeneral Practice Registered Nurse1336003912
  38. Batool Hajianpour, MDAnesthesiology Physician1134296940
  39. Mark HalimChild & Adolescent Psychiatry Physician1558998542
  40. Lesley HallFamily Nurse Practitioner1891167672
  41. Sharon Hall, PTPhysical Therapist1912123951
  42. Nuzhat Hameed, MDPediatrics Physician1245388123
  43. Jeneane HamidehStudent in an Organized Health Care Education/Training Program1518847714
  44. Clarence Hamilton, MDOphthalmology Physician1114098183
  45. Nacomi HamiltonBehavior Technician1225979172
  46. Holly Hammack, LCSWClinical Social Worker1295939338
  47. Riley HammondPeer Specialist1124770896
  48. Joshua HamptonRegistered Nurse1437020062
  49. Alexander Han, MDGastroenterology Physician1790967743
  50. Carol Han, DOFamily Medicine Physician1861569865

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.