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 17 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. Mehrnoush Gorjian, M.D.Neurology Physician1154868776
  2. Linda GoryRegistered Nurse1386890457
  3. Katanya GoswellStudent in an Organized Health Care Education/Training Program1225303282
  4. Jody GotocPharmacist1043882020
  5. Anna Goudarzi, MDStudent in an Organized Health Care Education/Training Program1396326419
  6. Kimberly GoulRegistered Nurse1215462767
  7. Marilyn Gove, FNPFamily Nurse Practitioner1427011618
  8. Jimmica Graham, RNFamily Nurse Practitioner1619003761
  9. Richard Grandquist, PA-CMedical Physician Assistant1578962049
  10. Carroll GraysRegistered Nurse1841737228
  11. Evelyn GreenLicensed Psychiatric Technician1932371036
  12. Kimberley GreenMental Health Counselor1710012737
  13. Jackie GreeneCommunity Health Worker1891622890
  14. Manpreet Grewel, DOStudent in an Organized Health Care Education/Training Program1568304095
  15. Kalie GriepBehavior Analyst1275470262
  16. Daivd GriffithRegistered Nurse1356813695
  17. Kristine Griffith, P.A-CPhysician Assistant1174566707
  18. Gilda GrobPhysician Assistant1740908995
  19. Sonia Gross, REGISTERED DIETITIANRegistered Dietitian1720612435
  20. Tamsin Grosskreutz, D.O.Student in an Organized Health Care Education/Training Program1639583008
  21. Gerlita GuadizRegistered Nurse1912179243
  22. Angel Guan, DOStudent in an Organized Health Care Education/Training Program1649920299
  23. Jose GuardadoBehavior Technician1306682414
  24. Michael GuccioneAddiction (Substance Use Disorder) Counselor1396454807
  25. Stephani Guccione, R1442770821Addiction (Substance Use Disorder) Counselor1346950870
  26. Isaac GuerraBehavior Technician1679444178
  27. Angelica Guerrero, M.S.Marriage & Family Therapist1699073890
  28. Barbara GuerreroRegistered Nurse1629423553
  29. Deanna GuevaraPeer Specialist1467317735
  30. Angel GuillenCounselor1376279109
  31. Julianne GuinassoMarriage & Family Therapist1336386739
  32. Pooja Gupta, DOFamily Medicine Physician1497762355
  33. Saloni GuptaNephrology Physician1801473517
  34. Andrew Gurewitz, DOStudent in an Organized Health Care Education/Training Program1447824453
  35. Ashley Gushulak, CRNAAnesthesiology Physician1386387827
  36. Mellissa GutierrezAddiction (Substance Use Disorder) Counselor1366047029
  37. Sara GutierrezBehavior Technician1881575355
  38. Scott GvesrudePsychiatric/Mental Health Registered Nurse1407028723
  39. Teresa GwinnRegistered Nurse1497994750
  40. Faris Haddad, DOStudent in an Organized Health Care Education/Training Program1689433708
  41. Tatiana HageStudent in an Organized Health Care Education/Training Program1881577195
  42. Sanaz Hajizadeh Barfjani, M.D.Student in an Organized Health Care Education/Training Program1912386210
  43. Ronal HalbrookRegistered Nurse1790163640
  44. Erin Hale, MDStudent in an Organized Health Care Education/Training Program1851249072
  45. James HaleyLicensed Vocational Nurse1356797450
  46. Michael HaleyLicensed Vocational Nurse1386136448
  47. Courtney Hall, RN, BSNRegistered Nurse1821671678
  48. Jenessa Halliday, PA-CPhysician Assistant1063986057
  49. Brittany HamiltonRegistered Nurse1396621876
  50. Jennifer Hamman, SLPSpeech-Language Pathologist1114150208

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.