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 11 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. Gail DavisLicensed Psychiatric Technician1386815009
  2. Lisa DavisAdult Psychiatric/Mental Health Registered Nurse1750692380
  3. Lori Davis, OTOccupational Therapist1003031444
  4. Mark DavisLicensed Vocational Nurse1144491028
  5. Rachel Davison, RNRegistered Nurse1528649720
  6. Travis Davison, PAPhysician Assistant1679120661
  7. Andrea DawsonAddiction (Substance Use Disorder) Counselor1255931069
  8. Elizabeth De La Portilla, DOStudent in an Organized Health Care Education/Training Program1497191225
  9. Sindy De La RosaRehabilitation Practitioner1184429607
  10. Christian DeanStudent in an Organized Health Care Education/Training Program1801690706
  11. Eric Deanda, B.A.Mental Health Counselor1487928719
  12. Arleen DeanoRegistered Nurse1720595473
  13. Timothy Dechenne, PH.D.Psychologist1962544486
  14. Samuel Decker, MDEmergency Medicine Physician1629575907
  15. Antonio Del RioRegistered Nurse1174125256
  16. Mary DelahantyRegistered Nurse1891302071
  17. Miriam DeloriaPsychiatric/Mental Health Registered Nurse1235300955
  18. Geena Andrea DemetilloPediatric Nurse Practitioner1699518027
  19. David DemianPsychiatry Physician1407745367
  20. Donald Dennis, MDDiagnostic Radiology Physician1205539244
  21. Jenny DesantoRegistered Nurse1386062735
  22. Brandi DeuelRegistered Nurse1003210972
  23. Daniel Dezeery, MDStudent in an Organized Health Care Education/Training Program1083316277
  24. Aneel Dhaliwal, MDStudent in an Organized Health Care Education/Training Program1346034469
  25. Jeffrey Dharmawan, DDSGeneral Practice Dentistry1427107382
  26. Dev DhillonEmergency Medicine Physician1609444033
  27. Kristina DhillonInternal Medicine Physician1508227976
  28. Poonam DhimanPharmacist1740721612
  29. Jayshree Dhruva, RPHPharmacist1659116192
  30. Matthew Diaz, D.O.Family Medicine Physician1235492943
  31. Vianey Diaz, BACase Manager/Care Coordinator1659755643
  32. Donald Dickinson, DDS, MDOral & Maxillofacial Surgery (D.M.D.)1336597558
  33. Michael DifronzoPhysician Assistant1881095107
  34. Jessica DimianFamily Medicine Physician1952808305
  35. Xiaomeng Ding, AMFTMental Health Counselor1275304750
  36. Huong DinhPharmacist1720731011
  37. Frances DizonRegistered Nurse1053297705
  38. Jacqueline DizonLicensed Psychiatric Technician1598202970
  39. Alan Doan, PHARM.D.Pharmacist1073735262
  40. Carolyn Doherty, MDOtolaryngology Physician1003862350
  41. Emmaline DohrnAttendant Care Provider1760027668
  42. Gloria DominguezPsychiatric/Mental Health Registered Nurse1205007028
  43. Thomas Donaldson, MDAdult Reconstructive Orthopaedic Surgery Physician1457315269
  44. Emelia DonkorhRegistered Nurse1225467970
  45. Alisa DonsonRegistered Nurse1841558624
  46. Seve DorseyAddiction (Substance Use Disorder) Counselor1619143112
  47. Aleana DowellAddiction (Substance Use Disorder) Counselor1932051463
  48. Aaliyah DreightonBehavior Technician1205675212
  49. Sarah Drinkwine, APCCMental Health Counselor1730863085
  50. Daniel Dubrow, PA-CPhysician Assistant1851940423

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.