NPPES file of Aug 9, 2026

Doctors and health care providers in Colton, CA

2,459 individual NPPES records list a practice address in Colton, 93rd of 812 California cities. The largest group is registered nurse: 345, 14% of the city's records, against 1% across California. Page 48 of 50.

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

Colton in California

  • Rank in California93rd of 812 cities by records
  • Share of the state0.3% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups32.7% of all records
  • Registered Nurse rank7th of the 10 California cities with the most

Compared with California as a whole, Colton has 13.3× the state's share of licensed psychiatric technician records and 0.23× its share of behavior technician records.

Providers in Colton, alphabetically

  1. Mary Welch, D.O.Emergency Medicine Physician1861776817
  2. Helen WellsLicensed Psychiatric Technician1174795421
  3. Kayla Wells, PSYD, BCBAPsychologist1225546294
  4. Lacey WellsMental Health Counselor1962609180
  5. Miranda WertMental Health Counselor1861867822
  6. Matthew Whealon, MDColon & Rectal Surgery Physician1902163710
  7. John Whitcher, DDSGeneral Practice Dentistry1073654315
  8. Malayah WhiteBehavior Technician1477404879
  9. Martin White, PHARM DPharmacist1427176312
  10. Peter White, MDPain Medicine Physician1326011461
  11. Susan White, CATC-CAADE-040950Addiction (Substance Use Disorder) Counselor1699809327
  12. Terrilyn White, LMFTMarriage & Family Therapist1891908745
  13. Allice Whitson, NPFamily Nurse Practitioner1831212752
  14. Lauren WichhartLicensed Psychiatric Technician1245760644
  15. Priyantha WickramanayakePhysician Assistant1760971972
  16. Katlin Wieselthier, DOInternal Medicine Physician1922851450
  17. Sarah Wilberforce-AryeeLicensed Vocational Nurse1184474447
  18. Madison Wilhelm, MDStudent in an Organized Health Care Education/Training Program1902665136
  19. Kalli WilkensPhysical Therapist1194324178
  20. Mallory Willenborg, PA-CEmergency Medicine Physician1598213886
  21. Adriana Williams, MDStudent in an Organized Health Care Education/Training Program1427996081
  22. Andrea WilliamsAddiction (Substance Use Disorder) Counselor1952030553
  23. Heidy Williams, OTPediatric Occupational Therapist1427139062
  24. Kathy WilliamsAddiction (Substance Use Disorder) Counselor1275050312
  25. Monty Williams, AOD COUNSELORAddiction (Substance Use Disorder) Counselor1962848648
  26. Nicole Williams, MDPsychiatry Physician1083936660
  27. Ronald WilliamsRegistered Nurse1265991954
  28. Shaneece WilliamsCase Manager/Care Coordinator1114579117
  29. Wanda Williams, APCC, AMFTMental Health Counselor1336580505
  30. Winston WilliamsRehabilitation Practitioner1871113548
  31. Wylder WilliamsStudent in an Organized Health Care Education/Training Program1538918180
  32. Sarah Williams-HardyRegistered Nurse1356602239
  33. Tempest WilloughbyCase Manager/Care Coordinator1558912949
  34. Carleon WilsonProfessional Counselor1578298279
  35. Charles Wilson, SLPSpeech-Language Pathologist1740981711
  36. Clarence Wilson, DBH, LPCCMental Health Counselor1033496245
  37. Jeffrey Wirth, MFTMarriage & Family Therapist1447424031
  38. Allison Wisniewski, D.OStudent in an Organized Health Care Education/Training Program1023359346
  39. Kayla Witcik, PA-CPhysician Assistant1619327467
  40. Alston WongStudent in an Organized Health Care Education/Training Program1699568139
  41. David Wong, MDSurgery Physician1841307535
  42. Jane Wong, PA-CPhysician Assistant1295917342
  43. Jane WongFamily Medicine Physician1316566185
  44. Kelly Wong, PHARM DPharmacist1992176259
  45. Patricia Wong, M.D.Student in an Organized Health Care Education/Training Program1871907501
  46. Shirley Wong, DOObstetrics & Gynecology Physician1346313459
  47. Webster Wong, MDPediatrics Physician1891861217
  48. Wesley Wong, MFTIMarriage & Family Therapist1437343894
  49. Monica Woo, P.A-CPhysician Assistant1629011093
  50. Barry Wood, RPTOrthopedic Physical Therapist1346508983

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

Colton, California appears in the CMS National Plan and Provider Enumeration System with 2,459 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 Colton - 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 Colton 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 Colton is weighted toward Registered Nurse (345 clinicians, followed by Student in an Organized Health Care Education/Training Program with 297 and Physician Assistant with 162). 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, Colton reports roughly 6.3 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, Physical Therapist is the most prominent one with no provider currently listing a Colton practice address, a coverage gap Colton patients typically fill by traveling to a larger nearby hub.

For Colton 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 Colton, CA?

There are 2,459 registered healthcare providers in Colton, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Colton?

The most common specialties in Colton are Registered Nurse, Student in an Organized Health Care Education/Training Program, Physician Assistant, Addiction (Substance Use Disorder) Counselor, Emergency Medicine Physician. Registered Nurse has the most providers with 345.

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.