NPPES file of Aug 9, 2026

Doctors and health care providers in Montclair, CA

1,301 individual NPPES records list a practice address in Montclair, 164th of 812 California cities. The largest group is behavior technician: 868, 67% of the city's records, against 18% across California. Page 18 of 27.

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

The 8 largest groups in Montclair

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

Montclair in California

  • Rank in California164th of 812 cities by records
  • Share of the state0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups72.5% of all records

Compared with California as a whole, Montclair has 10.4× the state's share of health & wellness coach records and 0.16× its share of marriage & family therapist records.

Providers in Montclair, alphabetically

  1. Corazon Navarro, MDObstetrics & Gynecology Physician1821139650
  2. Jonathan NavarroHealth & Wellness Coach1003617465
  3. Kathryn NavorBehavior Technician1659845287
  4. Ruth Neigut, MA CCC-SLPSpeech-Language Pathologist1821764234
  5. Danielle NewmanBehavior Technician1063266450
  6. Madison NewmanBehavior Technician1043917735
  7. Amanda NguyenBehavior Technician1407406424
  8. David Nguyen, DOFamily Medicine Physician1669961801
  9. John Nguyen, D.D.S.Dentist1548512205
  10. Jucy NguyenBehavior Technician1285214312
  11. Trang Nguyen, DDSDentist1639060288
  12. Monique NieblaBehavior Technician1144921396
  13. Jeimy NolascoBehavior Technician1922850874
  14. Brianna NunoBehavior Technician1023798865
  15. Mary O'BrienBehavior Technician1578262606
  16. Mandel O'NeilHealth & Wellness Coach1750260527
  17. Edgar ObandoBehavior Technician1306554852
  18. Celestine ObinnaBehavior Technician1528690880
  19. Evelyn OcampoSocial Worker1851649024
  20. Nayive OcampoBehavior Technician1558187591
  21. Kristine OcanaBehavior Technician1366165151
  22. Rosa Ocegueda, ASW73155Clinical Social Worker1336890516
  23. Stavros OfeidisBehavior Technician1316611148
  24. Joy Ofo, PAPhysician Assistant1396960357
  25. Anthony Oh, MDSurgery Physician1154401354
  26. Camiar Ohadi, M.DDiagnostic Radiology Physician1063582112
  27. Andrew OjedaHealth & Wellness Coach1497632434
  28. Egheosa OkontaBehavior Technician1528786845
  29. Natalie OlivasBehavior Technician1144953407
  30. Valerie OlivasBehavior Technician1245001825
  31. Shelsey OlivoBehavior Technician1700508363
  32. Gabriela OlmosBehavior Technician1831732569
  33. Viridiana OlveraBehavior Technician1659014322
  34. Breanna OntiverosBehavior Technician1669131934
  35. Renee OntiverosBehavior Technician1023884160
  36. Stephanie Ordaz ZepedaBehavior Technician1285315945
  37. Brenda OrellanaStudent in an Organized Health Care Education/Training Program1710597893
  38. Juan OrozcoBehavior Technician1356041511
  39. Yesenia OrozcoBehavior Technician1437983459
  40. Oscar OrtaHealth & Wellness Coach1396622361
  41. Arlen OrtegaBehavior Technician1801435805
  42. Julio Ortega, D.D.S.Dentist1174816870
  43. Selena OrtegaBehavior Technician1982328993
  44. Alejandro OrtizOccupational Therapist1245837798
  45. Gloria OrtizBehavior Technician1942832217
  46. Kimberly OrtizBehavior Technician1497471957
  47. Raeanna OrtizBehavior Technician1467088112
  48. Victoria OrtizBehavior Technician1851015853
  49. Zamire OsbyBehavior Technician1871211185
  50. Mia OsegueraBehavior Technician1467167254

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

Montclair, California appears in the CMS National Plan and Provider Enumeration System with 1,301 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 Montclair - 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 Montclair 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 Montclair is weighted toward Behavior Technician (868 clinicians, followed by Student in an Organized Health Care Education/Training Program with 47 and Health & Wellness Coach with 28). 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, Montclair reports roughly 3.3 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, Mental Health Counselor is the most prominent one with no provider currently listing a Montclair practice address, a coverage gap Montclair patients typically fill by traveling to a larger nearby hub.

For Montclair 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 Montclair, CA?

There are 1,301 registered healthcare providers in Montclair, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Montclair?

The most common specialties in Montclair are Behavior Technician, Student in an Organized Health Care Education/Training Program, Health & Wellness Coach, Pharmacist, Case Manager/Care Coordinator. Behavior Technician has the most providers with 868.

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.