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 34 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. Catalina Mann, ADCCase Manager/Care Coordinator1174771307
  2. Julie Mann, MDNeonatal-Perinatal Medicine Physician1184772121
  3. Lara Mansour, DOStudent in an Organized Health Care Education/Training Program1780264770
  4. Nancy ManueliNurse Practitioner1356053698
  5. Robert Manzo, PAPhysician Assistant1184791931
  6. Rabia Manzoor, MDPediatric Adolescent Medicine Physician1558422931
  7. William Mao, PHARMDPharmacist1902979297
  8. Yiqiong Mao, MDAnatomic Pathology & Clinical Pathology Physician1013065820
  9. Christine Mapote, LVNLicensed Vocational Nurse1689191561
  10. Edith Marca-Solomon, CRNACertified Registered Nurse Anesthetist1063639532
  11. Ann MarcianoMedical Physician Assistant1053715797
  12. Allison Marcus, LMFTMarriage & Family Therapist1710367289
  13. Ester Marin, MSWSocial Worker1154142628
  14. Bernabe Marinduque, M.D.Obstetrics & Gynecology Physician1467414540
  15. Michael Mark, LA.C, DIPL. O.M.Acupuncturist1508310244
  16. Amy Marks, CRNACertified Registered Nurse Anesthetist1720289614
  17. Scott Marnoy, MDGastroenterology Physician1104985779
  18. Andrew Marquez, LVNLicensed Vocational Nurse1609339969
  19. Marcus MarquezMarriage & Family Therapist1396343711
  20. Maria Sheila Marquez, RNPediatric Registered Nurse1720541097
  21. Anna MarriottAddiction (Substance Use Disorder) Counselor1124440490
  22. Renee MarriottMarriage & Family Therapist1003244682
  23. Abigail Martin, R.PHAmbulatory Care Pharmacist1316312002
  24. Heather Martin Del Campo, M.D.Family Medicine Physician1356790950
  25. Alina MartinezBehavior Analyst1972236305
  26. Andrea MartinezClinical Social Worker1336764430
  27. Erika MartinezBehavior Technician1093448409
  28. Hector Martinez, CRNACertified Registered Nurse Anesthetist1619194198
  29. Javier MartinezBehavior Technician1245893346
  30. Joseph Martinez, DCChiropractor1457995300
  31. Justin Martinez, CRNACertified Registered Nurse Anesthetist1477022051
  32. Maria MartinezCommunity Health Worker1952902132
  33. Mark Martinez, MDFamily Medicine Physician1538236435
  34. Michelle Martinez, M.S.Marriage & Family Therapist1124182928
  35. Miguel Martinez, MDFamily Medicine Physician1033472741
  36. Ricardo MartinezPhysical Therapy Assistant1881051050
  37. Stephanie Martinez, MDStudent in an Organized Health Care Education/Training Program1437092103
  38. Miranda Martinez-Moad, DOStudent in an Organized Health Care Education/Training Program1699479089
  39. Madonna Mashburn, PHARMDPharmacist1043404171
  40. Tracy Mason, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1467032946
  41. Joshua MassieLicensed Vocational Nurse1275389405
  42. Sarabjit Massoun, DDSGeneral Practice Dentistry1386819464
  43. Dolores Mast, LCSW 63286Clinical Social Worker1992987242
  44. Lauren Matsumoto, CPNPPediatric Nurse Practitioner1316316946
  45. Peter Mattar, MDFamily Medicine Physician1417005422
  46. Michael MatticePeer Specialist1386270270
  47. Sara MaulLicensed Vocational Nurse1013501956
  48. Mina Maximous, DOStudent in an Organized Health Care Education/Training Program1609335512
  49. Idorenyin Mbeke-EkanemRegistered Nurse1043152291
  50. Offiong Mbeke-Ekanem, RNRegistered Nurse1932066313

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.