NPPES file of Aug 9, 2026

Doctors and health care providers in Pomona, CA

5,102 individual NPPES records list a practice address in Pomona, 34th of 812 California cities. The largest group is behavior technician: 1,306, 26% of the city's records, against 18% across California. Page 67 of 103.

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).

Pomona in California

  • Rank in California34th of 812 cities by records
  • Share of the state0.5% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups51.1% of all records

Compared with California as a whole, Pomona has 4.7× the state's share of student in an organized health care education/training program records and 0.40× its share of internal medicine physician records.

Providers in Pomona, alphabetically

  1. Trang Nguyen, DDSEndodontics1306996897
  2. Trini NguyenBehavior Technician1457078289
  3. Van Nguyen, D.D.SGeneral Practice Dentistry1225220890
  4. Christina Nguyen-ApontesCommunity Health Worker1972627305
  5. Mai Nguyen-Tu, D.D.S.General Practice Dentistry1730307380
  6. Michael Nicholas, AMFTMarriage & Family Therapist1649733064
  7. Jason NichollsStudent in an Organized Health Care Education/Training Program1871349712
  8. Joyce Nicholson, LPCCProfessional Counselor1184308629
  9. Danielle Nickerson, ACSW #125009Clinical Social Worker1083439186
  10. Nancy Nielsen-Brown, PA-CMedical Physician Assistant1003101882
  11. Brigitte NietoOther Technician1952276537
  12. Omid NikjehStudent in an Organized Health Care Education/Training Program1366372062
  13. David NikoghosyanStudent in an Organized Health Care Education/Training Program1902598006
  14. Daniella NiliMedical Physician Assistant1417784653
  15. Nadeen NimaStudent in an Organized Health Care Education/Training Program1528850096
  16. Alyba NisarBehavior Technician1326854340
  17. Tobi NishikawaMarriage & Family Therapist1932231552
  18. Emma NiskanenStudent in an Organized Health Care Education/Training Program1518896505
  19. Katelyn NiswongerStudent in an Organized Health Care Education/Training Program1972449759
  20. Wen Ze NiuStudent in an Organized Health Care Education/Training Program1952937781
  21. Robert NixonStudent in an Organized Health Care Education/Training Program1700676939
  22. Brian NobleBehavior Technician1164378683
  23. Ryleigh NobleBehavior Technician1801642061
  24. Hanne Noergaard, D.OEmergency Medicine Physician1760434898
  25. Elizabeth Noji, M.S., CCC-SLPSpeech-Language Pathologist1861125759
  26. Jadealyn Faith NolaBehavior Technician1033078829
  27. Mariah NolanBehavior Technician1255032751
  28. Christopher Nones, PTAPhysical Therapy Assistant1518595776
  29. Parsa NooriStudent in an Organized Health Care Education/Training Program1053195115
  30. Alexa NoperiBehavior Technician1396489183
  31. Edie NottinghamBehavior Technician1053067694
  32. Alejandra NuevoStudent in an Organized Health Care Education/Training Program1366925901
  33. Juana NunezDay Training/Habilitation Specialist1619220555
  34. Melissa NunezBehavior Technician1265023220
  35. Paige NunezBehavior Technician1336984277
  36. Patricia NunezDay Training/Habilitation Specialist1255043485
  37. Victoria Nunez-JalpaBehavior Technician1124610423
  38. Sean O'DonnellPhysician Assistant1952889982
  39. Connor O'MalleyStudent in an Organized Health Care Education/Training Program1265354914
  40. Brian O'Neill, D.P.M.Foot & Ankle Surgery Podiatrist1215945647
  41. Patrick O'SullivanStudent in an Organized Health Care Education/Training Program1407645153
  42. John Oakley, M.D.Anesthesiology Physician1841233921
  43. Chasie OandasanBehavior Technician1922959634
  44. John-Paul Obae, RNRegistered Nurse1003666728
  45. Nicklas ObergStudent in an Organized Health Care Education/Training Program1164351938
  46. Alex ObiefunaRehabilitation Practitioner1548561210
  47. Reynaldo Obrero, P.A.-CPhysician Assistant1275784852
  48. Jacqueline Ocampo-CatonBehavior Technician1588532345
  49. Genokristo Ochieng, MDStudent in an Organized Health Care Education/Training Program1093602278
  50. Jacob OchsnerStudent in an Organized Health Care Education/Training Program1528814613

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

Pomona, California appears in the CMS National Plan and Provider Enumeration System with 5,102 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 Pomona - 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 Pomona 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 Pomona is weighted toward Behavior Technician (1,306 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,003 and Addiction (Substance Use Disorder) Counselor with 296). 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, Pomona reports roughly 13.1 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.

For Pomona 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 Pomona, CA?

There are 5,102 registered healthcare providers in Pomona, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Pomona?

The most common specialties in Pomona are Behavior Technician, Student in an Organized Health Care Education/Training Program, Addiction (Substance Use Disorder) Counselor, Marriage & Family Therapist, Physician Assistant. Behavior Technician has the most providers with 1,306.

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.