NPPES file of Aug 9, 2026

Doctors and health care providers in Rancho Cucamonga, CA

4,579 individual NPPES records list a practice address in Rancho Cucamonga, 41st of 812 California cities. The largest group is behavior technician: 1,830, 40% of the city's records, against 18% across California. Page 15 of 92.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Rancho Cucamonga

  1. Behavior Technician1,830
  2. Behavior Analyst367
  3. Marriage & Family Therapist248
  4. Pharmacist134
  5. Clinical Social Worker130
  6. Physical Therapist114
  7. Mental Health Counselor90
  8. Community Health Worker86

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Rancho Cucamonga in California

  • Rank in California41st of 812 cities by records
  • Share of the state0.5% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups53.4% of all records

Compared with California as a whole, Rancho Cucamonga has 3.8× the state's share of behavior analyst records and 0.15× its share of student in an organized health care education/training program records.

Providers in Rancho Cucamonga, alphabetically

  1. Selina Chan, DDSEndodontics1225233687
  2. Susanna Chan, D.P.M.Podiatrist1881004059
  3. Chanmaly ChandaraBehavior Technician1114754850
  4. Angela Chang, MA CCC-SLPSpeech-Language Pathologist1689196628
  5. Ilan Chang, D.M.DGeneral Practice Dentistry1679639009
  6. James Chang, L.AC.Acupuncturist1750768586
  7. Jenss Chang, PHDClinical Psychologist1942494786
  8. Karen Chang, PHARMDPharmacist1497434278
  9. Lucia Chang, L.AC.Acupuncturist1144750662
  10. Lucy ChangBehavior Technician1447177282
  11. Pen-Laing Chang, MDNeonatal-Perinatal Medicine Physician1457358897
  12. Sylvia ChangOphthalmology Physician1053843458
  13. Teresa Chang, L.AC.Acupuncturist1912212002
  14. Tiffany ChangClinical Social Worker1972311199
  15. Sun Chang-Vega, PHARMDPharmacist1891382008
  16. Daniel Channell, MDObstetrics & Gynecology Physician1699749044
  17. Lazarus Chanza, D.D.SGeneral Practice Dentistry1427115922
  18. Elden ChaoPharmacist1902691678
  19. Anthony Chapman, RBTBehavior Technician1134934003
  20. Ruthie ChapmanBehavior Technician1982563409
  21. Julie Chappa, LMFTMarriage & Family Therapist1619264652
  22. Steven Chapple, DDSDentist1144439704
  23. Priya Chauhan, PTPhysical Therapist1104312677
  24. Teresa ChavarinClinical Social Worker1356047260
  25. Kimberly Chavarria, C.N.CNutritionist1780006502
  26. Sofia ChavarriaStudent in an Organized Health Care Education/Training Program1639538747
  27. Stephanie ChavarriaBehavior Technician1689565780
  28. Angelica ChavezBehavior Technician1841097466
  29. Ayleen ChavezBehavior Technician1801652656
  30. Christian ChavezBehavior Analyst1770113631
  31. Daniel Chavez, DDSGeneral Practice Dentistry1851447296
  32. Daniel ChavezBehavior Technician1801745070
  33. Elora ChavezBehavior Technician1467091595
  34. Francisco Chavez, BCBABehavior Analyst1770835514
  35. Gissel ChavezBehavior Analyst1326994393
  36. Guadalupe ChavezAssistant Health Information Record Technician1457869281
  37. Isabelle ChavezBehavior Analyst1730057803
  38. Jessica ChavezClinical Social Worker1528615150
  39. Lisbeth ChavezBehavior Technician1396550356
  40. Marianna ChavezBehavior Technician1033061015
  41. Marjorie ChavezCommunity Health Worker1962244277
  42. Melissa ChavezBehavior Technician1669190211
  43. Michael Carlos ChavezBehavior Analyst1477351807
  44. Socorro Chavez, RDHDental Hygienist1356783419
  45. Vanessa ChavezBehavior Technician1467312710
  46. Joseline Chavez AlvarezBehavior Technician1659247286
  47. Charmelle ChavisBehavior Technician1033749304
  48. Moses ChegeCardiac Rehabilitation Registered Nurse1033771274
  49. Ahmad ChemkhiBehavior Technician1184578171
  50. En Chen, D.D.SGeneral Practice Dentistry1780090589

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

Rancho Cucamonga, California appears in the CMS National Plan and Provider Enumeration System with 4,579 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 Rancho Cucamonga - 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 Rancho Cucamonga 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 Rancho Cucamonga is weighted toward Behavior Technician (1,830 clinicians, followed by Behavior Analyst with 367 and Marriage & Family Therapist with 248). 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, Rancho Cucamonga reports roughly 11.8 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Rancho Cucamonga practice address, a coverage gap Rancho Cucamonga patients typically fill by traveling to a larger nearby hub.

For Rancho Cucamonga 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 Rancho Cucamonga, CA?

There are 4,579 registered healthcare providers in Rancho Cucamonga, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Rancho Cucamonga?

The most common specialties in Rancho Cucamonga are Behavior Technician, Behavior Analyst, Marriage & Family Therapist, Pharmacist, Clinical Social Worker. Behavior Technician has the most providers with 1,830.

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.