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 45 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. Noel Ramirez, M.D.Family Medicine Physician1922325588
  2. Rita RamirezRegistered Nurse1033953252
  3. Saraet Ramirez, RNEmergency Registered Nurse1851259840
  4. Silverio RamirezContractor1477228799
  5. Stephanie RamirezClinical Social Worker1720554306
  6. Victor Ramirez, PHYSICIANS ASSISTANTPhysician Assistant1851359327
  7. Yvette RamirezMedical-Surgical Registered Nurse1558105494
  8. Raymond Ramos, MDPediatrics Physician1205903226
  9. Richard Ramos, PTPhysical Therapist1093938581
  10. Subhadra RaniPharmacist1497204671
  11. Nyla Raponi, PAPhysician Assistant1245307008
  12. Nimah Rasheed, MDStudent in an Organized Health Care Education/Training Program1730977307
  13. Zakiyyah Rasheed, D.O.Emergency Medicine Physician1538320874
  14. Lev Rasin, MDInternal Medicine Physician1588731475
  15. Sean Rassman, MDNeuromusculoskeletal Medicine & OMM Physician1730237686
  16. Patrick Raymore, MDOphthalmology Physician1205903010
  17. Rosario RaymundoAttendant Care Provider1336789254
  18. Julie Reddoch, M.D.Internal Medicine Physician1447516208
  19. Neeraja Reddy, MDAnesthesiology Physician1417005380
  20. Ravita Reddy, M.D.Child & Adolescent Psychiatry Physician1225122039
  21. Sivapriya Reddy, DONeonatal-Perinatal Medicine Physician1891909768
  22. David Reiley, MDEmergency Medicine Physician1154498079
  23. Maria Relente-Santos, MDInternal Medicine Physician1437862232
  24. Jamie RempisMarriage & Family Therapist1295400497
  25. Brian Renner, D.C.Chiropractor1295827467
  26. Yareli Renovato, MACommunity Health Worker1194604835
  27. Melissa RenteriaBehavior Technician1336886225
  28. Jessica RentzMarriage & Family Therapist1194025403
  29. Charlotte Resch, MDPlastic and Reconstructive Surgery Physician1871641662
  30. Felipe Rescober, B.S.PHARMACYPharmacist1992844666
  31. Michelle Revier, MDAllergy Physician1437656915
  32. Edward Reyes, MDFamily Medicine Physician1225186109
  33. Evette Reyes, RRT, RPSGTRegistered Respiratory Therapist1154144251
  34. Andrea Reyes AcevedoBehavior Technician1265165500
  35. Wendy ReynaPeer Specialist1053147397
  36. Kerri Reynolds, APCCMental Health Counselor1295544328
  37. Vanessa Reynolds, MDEmergency Medicine Physician1386792331
  38. Chun Rhim, MDSurgery Physician1750406252
  39. April Rice, RNAdministrator Registered Nurse1487502647
  40. Brian Richards, D.O.Emergency Medicine Physician1427445055
  41. Douglas Richards, MDAddiction Medicine (Internal Medicine) Physician1194892091
  42. Gwendolyn RichardsmallwoodClinical Social Worker1952754905
  43. Janice RichardsonHome Health Registered Nurse1073127841
  44. Marcia Richardson, LVNLicensed Vocational Nurse1689367021
  45. Torrey Richardson, NURSE PRACTITIONERFamily Nurse Practitioner1780437202
  46. Zrria Richardson, M.D.Otolaryngology Physician1174886113
  47. Elena Riley, NPFamily Nurse Practitioner1992651418
  48. Elisa Rios, RNRegistered Nurse1982447108
  49. Fernando Rios, M.S.Marriage & Family Therapist1245413632
  50. Francisco RiosBehavior Analyst1063129294

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.