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 24 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. Ian Huynh, DDSGeneral Practice Dentistry1528939212
  2. Michelle Huynh, RDRegistered Dietitian1154969400
  3. Allen Hwang, MDPlastic Surgery within the Head & Neck (Otolaryngology) Physician1164599072
  4. Cliff Hwang, MDInternal Medicine Physician1336216266
  5. Dennis Hwang, MDPulmonary Disease Physician1902928179
  6. Eugene Hwang, MDCardiovascular Disease Physician1922156801
  7. Wei Chan Hwang, M.D.Internal Medicine Physician1104976141
  8. Byung-Chyul Hyun, MDFamily Medicine Physician1558432534
  9. Diana IbarraMarriage & Family Therapist1205795440
  10. Maged Ibrahim, M.D.Pediatrics Physician1306852934
  11. Sherry IbrahimPharmacist1508645631
  12. Olujide Ige, BPHARMPharmacist1831638899
  13. Edward Im, MDInternal Medicine Physician1073661997
  14. Farah Imam, M.D.Family Medicine Physician1437414380
  15. Talha Imam, MDNephrology Physician1740357557
  16. Paula Imoto, O.D.Optometrist1467635094
  17. Jesse Ingram, PA-CSurgical Physician Assistant1851512560
  18. Helen Iniguez RojanoCase Manager/Care Coordinator1780417170
  19. Jerrelyn Inocencio-Diaz, MDObstetrics & Gynecology Physician1326115163
  20. Herman Ip, RPHPharmacist1689877045
  21. Khosro Iromloo, M.D.Specialist1851395313
  22. Vanessa Ishida, ODOptometrist1770239709
  23. Christina Isinhue, PHARM. D.Pharmacotherapy Pharmacist1891869426
  24. Ming Isinhue, MDFamily Medicine Physician1851468763
  25. Jessica Iskander, M.D.Obstetrics & Gynecology Physician1063671618
  26. Millina Iskander, PHARMD, BCPSPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1831644103
  27. Hicret Islamoglu, DMDDentist1356078083
  28. Andrew IsrailPharmacist1518593052
  29. Joshua Issler, MDStudent in an Organized Health Care Education/Training Program1710735816
  30. Guy Ito, PHARMD.Pharmacist1588758361
  31. Aaron Iverson, CRNACertified Registered Nurse Anesthetist1598185324
  32. Eduardo Izquierdo, P.T.Physical Therapist1568796415
  33. Bette-Lee Jablow, MDPediatrics Physician1740338680
  34. David JacabanNeurorehabilitation Occupational Therapist1427275270
  35. Jocelyn JacksonStudent in an Organized Health Care Education/Training Program1700638855
  36. Georgia Jackson-Thompson, MAMental Health Counselor1851423206
  37. Gary Jacobson, ODOptometrist1073680815
  38. Karisa Jahn, D.O.Geriatric Medicine (Family Medicine) Physician1346531027
  39. Amina Jamali, DOStudent in an Organized Health Care Education/Training Program1679102602
  40. Preeti JamaraiNurse Practitioner1336922640
  41. Nathan JamesChiropractor1871391243
  42. Francis Jang, MDInternal Medicine Physician1780732743
  43. Naoje JaramilloSchool Counselor1174487094
  44. Catherine Jauregui-Husun, F.N.P.Family Nurse Practitioner1851584171
  45. Rommel JavierCertified Registered Nurse Anesthetist1548557648
  46. Kumari Jayawardena, MDGeriatric Medicine (Internal Medicine) Physician1255388385
  47. Emanuel Jean-Pierre, PA-CPhysician Assistant1649306457
  48. Kennyanna JeffersonClinical Social Worker1114540598
  49. Faisal Jehan, MDOphthalmology Physician1568539450
  50. Marie Jelonek, MDPediatrics Physician1730250796

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.