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 4 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. Lakiesha ArmstrongDoula1164229183
  2. Nhikolai ArquillanoBehavior Technician1366018640
  3. Katherine Arrogancia, PHARM.D.Pharmacist1073792784
  4. Noemi Arroyo ArroyoSleep Medicine (Family Medicine) Physician1053250696
  5. Wais Arsala, MDSports Medicine (Family Medicine) Physician1518267616
  6. Elisa ArteagaStudent in an Organized Health Care Education/Training Program1487102729
  7. Arman Aryai, MDInternal Medicine Physician1851592737
  8. Julie ArzateCommunity Health Worker1871463786
  9. Aaron AsadPhysician Assistant1336748565
  10. Yaw Asamoah, PA-CPhysician Assistant1083917439
  11. Farbod Asgarzadie-Gadim, M.D.Neurological Surgery Physician1760415236
  12. Sandra Ash, AU.D.Audiologist1396804027
  13. Adrianne Ashley, M.P.H., R.D.Registered Dietitian1881845659
  14. Wanisha AshleyRehabilitation Practitioner1386828036
  15. Janice AshmoreCounselor1417697384
  16. Pierre Assaf, MDEmergency Medicine Physician1417969973
  17. Emnet Assefa, RDNRegistered Dietitian1841031754
  18. Lorraine Atilano, MDObstetrics & Gynecology Physician1265584635
  19. Margaret Atkisson, LCSWClinical Social Worker1811195761
  20. Patrick Avanessian, M.D.Student in an Organized Health Care Education/Training Program1235480443
  21. Diana AvilaBehavior Technician1326934266
  22. Grace AvilaCounselor1013509108
  23. Maria AvilaPeer Specialist1043855059
  24. Maritza AvilaSocial Worker1033621396
  25. Robert AvilesDental Hygienist1629707997
  26. Dana Awad, MDSleep Medicine (Family Medicine) Physician1568041028
  27. Nada Awad, MDStudent in an Organized Health Care Education/Training Program1770070591
  28. Meg AwalaBehavior Technician1174442479
  29. Alexandra Ayoub, DDSDentist1467672279
  30. Hamsa Azar, ODOptometrist1346670676
  31. Andro Azer Refaat, DMDGeneral Practice Dentistry1710675285
  32. Faramarz Azizi, MDAnatomic Pathology & Clinical Pathology Physician1104974914
  33. Asal AzizoddinOncology Pharmacist1871976704
  34. Uwa Comfort AzubuikeFamily Nurse Practitioner1346023991
  35. Truong BachBehavior Technician1306706197
  36. Jackeline Baciu, NPNurse Practitioner1306639133
  37. Karen Bae, PHARMDAmbulatory Care Pharmacist1013402098
  38. Karen Baghamian, MDPsychiatry Physician1730237660
  39. Mark Bai, MDFamily Medicine Physician1336216217
  40. Emmanuel Baidoo, D.O.Family Medicine Physician1831319516
  41. Blake BaileyStudent in an Organized Health Care Education/Training Program1265168496
  42. Rondalyn BaileyHome Health Aide1235068867
  43. Corinne Bainer, MDObstetrics & Gynecology Physician1386792216
  44. Malinda Baker, M.D.Family Medicine Physician1376811349
  45. Timothy Baker, CCPPerfusionist1508169988
  46. Canagasundra Balakrishnan, MDPediatric Rheumatology Physician1902977952
  47. Saranya Balasubramaniam, MDOphthalmology Physician1528321767
  48. Crystal BalderasMental Health Counselor1841946514
  49. Jay Ball, MDCardiovascular Disease Physician1831260801
  50. Royda Ballard, CNMAdvanced Practice Midwife1881761625

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.