NPPES file of Aug 9, 2026

Doctors and health care providers in Monrovia, CA

17,347 individual NPPES records list a practice address in Monrovia, 8th of 812 California cities. The largest group is behavior technician: 16,526, 95% of the city's records, against 18% across California. Page 230 of 347.

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

The 8 largest groups in Monrovia

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

Monrovia in California

  • Rank in California8th of 812 cities by records
  • Share of the state1.8% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups96.4% of all records
  • Behavior Technician rank1st of the 10 California cities with the most

Compared with California as a whole, Monrovia has 5.4× the state's share of behavior technician records and 0.09× its share of marriage & family therapist records.

Providers in Monrovia, alphabetically

  1. Gabriel OlivaBehavior Technician1598509275
  2. Gisselle OlivaBehavior Technician1356067334
  3. Gisselle OlivaBehavior Technician1083582084
  4. Antonia OlivaresBehavior Technician1326966904
  5. Irvin OlivaresBehavior Technician1164140489
  6. Jessica OlivaresBehavior Technician1679459762
  7. Rolinda OlivaresBehavior Technician1669356580
  8. Wendy Olivares OregelBehavior Technician1346039773
  9. Gabriella OlivasBehavior Technician1871449371
  10. Jayleen OlivasBehavior Technician1831020346
  11. Martha OlivasBehavior Technician1578387676
  12. Matthew OlivasBehavior Technician1184441248
  13. Oscar OlivasBehavior Technician1992505515
  14. Alyssa Olivas NoveloBehavior Technician1336930296
  15. Renee OliveBehavior Technician1811715709
  16. Jhay OliveiraBehavior Technician1457006959
  17. Brandinn OliverBehavior Technician1154136984
  18. Cassidy OliverBehavior Technician1871479253
  19. Claire OliverBehavior Technician1861119174
  20. Jennifer OliverBehavior Technician1962252676
  21. Laura OliverBehavior Technician1447939376
  22. Marco OliverBehavior Technician1558082677
  23. Mary OliverBehavior Technician1972423309
  24. Erica OliverasBehavior Technician1134804529
  25. Alejandra OliverosBehavior Technician1891419487
  26. Lizzie OlivetBehavior Technician1467394346
  27. Scott OlivettBehavior Technician1396606133
  28. Reagan OliviaBehavior Technician1407500408
  29. Alexandria OlivieriBehavior Technician1982563219
  30. Shaina OlivieriBehavior Technician1770217358
  31. Katie OllestadBehavior Technician1992581995
  32. Valeria OlmedoBehavior Technician1720786551
  33. Kiara Olmo VelezBehavior Technician1922973916
  34. Ernesto OlmosBehavior Technician1861073124
  35. Jason OlmosBehavior Technician1891415402
  36. Luz OlmosBehavior Technician1285590059
  37. Sami OlmosBehavior Technician1902559552
  38. Daniel Olsen, BCBABehavior Analyst1164794004
  39. Shelby OlsenBehavior Technician1285378372
  40. Ashley OlsonBehavior Technician1639823016
  41. Cameron OlsonBehavior Technician1699549055
  42. Hunter OlsonBehavior Technician1376322586
  43. Isabelle OlsonBehavior Technician1790628808
  44. Joshua OlsonBehavior Technician1740966233
  45. Kate OlsonBehavior Technician1871360164
  46. Angela OlveraBehavior Technician1588484349
  47. Belen OlveraBehavior Technician1346063823
  48. Diana OlveraBehavior Technician1417892738
  49. Janet OlveraBehavior Technician1114645785
  50. Jonathan OlveraBehavior Technician1639905649

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

Monrovia, California appears in the CMS National Plan and Provider Enumeration System with 17,347 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 Monrovia - 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 Monrovia 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 Monrovia is weighted toward Behavior Technician (16,526 clinicians, followed by Behavior Analyst with 109 and Marriage & Family Therapist with 94). 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, Monrovia reports roughly 44.5 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Monrovia practice address, a coverage gap Monrovia patients typically fill by traveling to a larger nearby hub.

For Monrovia 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 Monrovia, CA?

There are 17,347 registered healthcare providers in Monrovia, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Monrovia?

The most common specialties in Monrovia are Behavior Technician, Behavior Analyst, Marriage & Family Therapist, Speech-Language Pathologist, Student in an Organized Health Care Education/Training Program. Behavior Technician has the most providers with 16,526.

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.