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 31 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. Derek Li, MDInternal Medicine Physician1902973845
  2. Tina Li, ODOphthalmology Physician1598787061
  3. Yang Li, D.O.Internal Medicine Physician1629411582
  4. Conrad Liang, M.D., PH.D.Vascular Neurology Physician1912141334
  5. John LiangPharmacist1932272374
  6. Patricia Liang, ODOptometrist1912481961
  7. Nasser Liasi, MDInternal Medicine Physician1144466780
  8. Aurora LibbeyMental Health Counselor1801311899
  9. Amy Lien, PHARMDPharmacist1952904906
  10. Mei LieuPharmacist1558880112
  11. Kimberly Light-Allende, PSY.D.Clinical Psychologist1497872915
  12. Catalina Lim, MDNeurology Physician1154479004
  13. Nancy Lim, MDFamily Medicine Physician1275506412
  14. Nelly Lim, PA-CPhysician Assistant1447052618
  15. Paul LimMedical Physician Assistant1396479614
  16. You Seung LimAcupuncturist1033647581
  17. Antony Lin, MDRheumatology Physician1740349323
  18. Katherine Lin, D.O.Internal Medicine Physician1427208651
  19. Kathryn Lin, MDPediatrics Physician1033267943
  20. Maria Lin, M.D.Pediatrics Physician1891936456
  21. Rubin Lin, D.O.Family Medicine Physician1679678916
  22. Yenni Lin, PHARM.DPharmacist1932491099
  23. Andrew LinaresStudent in an Organized Health Care Education/Training Program1922790104
  24. Dennis Lindeborg, MDAnesthesiology Physician1649341694
  25. Valerie Lindeborg, PHARM DOncology Pharmacist1053472670
  26. Richard Lindwall, D.C.Chiropractor1841335627
  27. Kerry Litman, MDFamily Medicine Physician1558438408
  28. Denisha Little, LVNLicensed Vocational Nurse1740065192
  29. Cheryl Liu, PA-CFamily Medicine Physician1750856662
  30. David Liu, MDInternal Medicine Physician1073661856
  31. Grace Liu, DOAnesthesiology Physician1770650590
  32. Kelvin Liu, PA-CPhysician Assistant1609696939
  33. Les Liu, MDInternal Medicine Physician1386703999
  34. Qiaomin LiuMassage Therapist1477414167
  35. Robert LiuInternal Medicine Physician1386178002
  36. Dennis Livingston, PAPhysician Assistant1104993955
  37. Beverley Lloyd, NPNurse Practitioner1750440483
  38. Jonathan Lo, MDInternal Medicine Physician1164570941
  39. Mark Lochte, PAPhysician Assistant1912074782
  40. Sofia Editha Locquiao, NPFamily Nurse Practitioner1043782550
  41. Daniel Loera, PA-CPhysician Assistant1619385309
  42. Noemi LoeraSpeech-Language Assistant1477086957
  43. Jafeth LomasBehavior Analyst1053083881
  44. Marisa LookEmergency Medicine Physician1346694593
  45. Andrew Raul LopezMassage Therapist1841823556
  46. Anita Lopez, CAADE REGISTRATIONAddiction (Substance Use Disorder) Counselor1811020159
  47. Ariana Lopez, LVN 727302 4/30/2026Licensed Vocational Nurse1093609885
  48. Arlene Lopez, FNPFamily Nurse Practitioner1154887941
  49. Brandie LopezRegistered Respiratory Therapist1861973067
  50. Denise Lopez, B.ABehavior Analyst1205353653

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.