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 18 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. Andrew ArreolaBehavior Technician1437992484
  2. Brenda ArreolaBehavior Technician1013784792
  3. Daniela ArreolaBehavior Technician1598483802
  4. Dina ArreolaBehavior Technician1033803713
  5. Jaylene ArreolaBehavior Technician1700719739
  6. Maria ArreolaSocial Worker1154198463
  7. Pedro ArreolaBehavior Technician1730037698
  8. Udeliva ArreolaBehavior Technician1164309084
  9. Yvette ArreolaBehavior Technician1437041902
  10. Kimberly Arreola VallejoBehavior Technician1699495200
  11. Daniela ArriagaBehavior Technician1285410373
  12. Destiny ArriagaBehavior Technician1124888771
  13. Paloma ArrieroBehavior Technician1396465902
  14. Caroline ArringtonBehavior Technician1144935248
  15. Danaejah Arrington-BartonBehavior Technician1497633473
  16. Carmen ArriojaBehavior Technician1477295988
  17. Anibal ArrizonBehavior Technician1386449213
  18. Brittany ArroyoBehavior Technician1124756879
  19. Cynde ArroyoBehavior Technician1851965107
  20. Debra ArroyoBehavior Technician1083320154
  21. Karen ArroyoBehavior Technician1164160370
  22. Sophia ArroyoBehavior Technician1427880566
  23. Josselyn Arroyo RodriguezBehavior Technician1821781162
  24. Elizabeth ArrudaBehavior Technician1346169836
  25. Nozaneen ArshadyBehavior Technician1992488811
  26. Abigail ArteagaBehavior Technician1639048002
  27. Vanessa ArteagaBehavior Technician1063249662
  28. Odallys Arteaga WinzerBehavior Technician1710608849
  29. Maile ArterBehavior Technician1194520023
  30. Jahsiem ArthursBehavior Technician1609790021
  31. Diego ArtigaBehavior Technician1710719851
  32. Evelyn ArtigaBehavior Technician1386494094
  33. Umme ArushaBehavior Technician1144924796
  34. Aida ArutyunovaBehavior Technician1326857533
  35. Veronica ArvizoBehavior Technician1366243156
  36. Nicolette ArvizuBehavior Technician1154219400
  37. Rhianna-Rose AryeeteyBehavior Technician1346033214
  38. Crystal AryesBehavior Technician1285510768
  39. Brittany ArzetaBehavior Technician1679430532
  40. Lilly ArzetaBehavior Technician1083473219
  41. Michelle Arzu-MurphyBehavior Technician1659058022
  42. Emajon-Marie AsafBehavior Technician1346959673
  43. Maryam AsasBehavior Technician1932913191
  44. Daniel AscencioBehavior Technician1760204317
  45. Ebonie AshBehavior Technician1316761422
  46. Jessie AshBehavior Technician1689460446
  47. Jennifer AshcraftBehavior Technician1669204152
  48. Anita AsheghBehavior Technician1851003495
  49. Dana AshfordBehavior Technician1073434015
  50. Darion AshleyBehavior Technician1104672435

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.