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 55 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. Christine Tran, M.D.Student in an Organized Health Care Education/Training Program1568817575
  2. Danny Tran, D.C.Chiropractor1265545859
  3. Diana Tran, M.D.Obstetrics & Gynecology Physician1114119328
  4. Dong Tran, MDStudent in an Organized Health Care Education/Training Program1124513437
  5. Hannah Tran, PHARMDPharmacist1639618291
  6. Hien-Phuong Tran, PHARM.DPharmacotherapy Pharmacist1437222130
  7. Jimmy Dung Tran, MDFamily Medicine Physician1487718367
  8. Kevin Tran, D.M.DGeneral Practice Dentistry1093831893
  9. Lisa Tran, MDFamily Medicine Physician1366590168
  10. Loi Tran, DOInternal Medicine Physician1780744979
  11. Michael Tran, BSRTRegistered Respiratory Therapist1750716957
  12. Mike Tran, MSN, FNP-BCFamily Nurse Practitioner1902769409
  13. Minh Tuan Nhu TranStudent in an Organized Health Care Education/Training Program1285321430
  14. Olivier Tran, PHARM.D.Pharmacist1932536547
  15. Richard Tran, PHARMDPharmacist1831636158
  16. Tammy Tran, ODOptometrist1043387806
  17. Thao Tran, PHARM.D.Pharmacist1821198680
  18. Thien Tran, CRNACertified Registered Nurse Anesthetist1700946977
  19. Thuan Tran, MDFamily Medicine Physician1164582367
  20. Thuy Tran, PHARMDPharmacist1235747742
  21. Patricia Trantham, MDFamily Medicine Physician1437226354
  22. Mark Trieger, BABehavior Technician1437611613
  23. Heidel TrindadRegistered Respiratory Therapist1255819702
  24. Ha Trinh, PHARMDOncology Pharmacist1356653331
  25. Jadie Trinh, PHARM.D.Pharmacist1053767103
  26. Jerry TrinhStudent in an Organized Health Care Education/Training Program1487345351
  27. Kim Trinh, M.D.Emergency Medicine Physician1063689842
  28. Matt-Phuoc Trinh, D.M.D.General Practice Dentistry1801008495
  29. Ashley Trino, PTPhysical Therapist1790088094
  30. Narendra Trivedi, MDAnesthesiology Physician1134296957
  31. Vicki TrotterPeer Specialist1275313926
  32. Michael Trujillo, M.D.Student in an Organized Health Care Education/Training Program1407318348
  33. Daisy Trujillo GarciaBehavior Technician1568114825
  34. Hoan-Vu Truong, DMDGeneral Practice Dentistry1811004740
  35. Jacqueline Truong, O.D.Optometrist1205994050
  36. Jerome Tsai, MDDiagnostic Radiology Physician1407054430
  37. Pauline Tsai, MDAllergy Physician1336216357
  38. Betty Tseng, PHARMDPharmacist1386717163
  39. Lawrence Tseng, ODOptometrist1679071930
  40. Faith Tsou, RNRegistered Nurse1225707508
  41. Shihhui TsouFamily Nurse Practitioner1083009286
  42. John TuckerDiagnostic Radiology Physician1083814297
  43. Pranee Tulyathan-Uniat, MDPediatrics Physician1124199161
  44. Stephen Turay, DOFamily Medicine Physician1457428344
  45. Cathleen Tures, AUDAudiologist1760541494
  46. Christina Turner, RDRegistered Dietitian1477027035
  47. Lorna Turner, MDEmergency Medicine Physician1487702213
  48. Rosemary Turner, M.S.Marriage & Family Therapist1841722550
  49. Sarah Turner, M.D.Obesity Medicine (Family Medicine) Physician1083891253
  50. Stephine Turnipseed, MSWSocial Worker1053103549

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.