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 275 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. Michelle RomeroBehavior Technician1861174708
  2. Oscar RomeroBehavior Technician1639038797
  3. Paola RomeroBehavior Technician1316770308
  4. Paula RomeroBehavior Technician1649050071
  5. Ruth RomeroBehavior Technician1265265391
  6. Vianavi RomeroBehavior Technician1841023967
  7. Virginia RomeroBehavior Technician1043014632
  8. Margarita Romero CazaresBehavior Technician1629761192
  9. Yamira Romero MadrigalBehavior Technician1598543837
  10. Adela Romero PulidoBehavior Technician1932862117
  11. Abril Romero-MontalvoBehavior Technician1255159562
  12. Asael RomoBehavior Technician1083362206
  13. Bryanna RomoBehavior Technician1083408272
  14. Christian RomoBehavior Technician1194699223
  15. Christopher RomoBehavior Technician1306718713
  16. Clarissa RomoBehavior Technician1902775372
  17. Yaritza RomoBehavior Technician1164108635
  18. Yareli Romo QuezadaBehavior Technician1497532311
  19. Raven RoncelliBehavior Technician1679435382
  20. Destiny RonquilloBehavior Technician1174409585
  21. Nicole RoodBehavior Technician1679438196
  22. Tina RoqueBehavior Technician1881312544
  23. Eveltn Rosa-CastroBehavior Technician1720709801
  24. Sharellee Rosado CalderonBehavior Technician1962115600
  25. Bareket RosalesBehavior Technician1588365324
  26. Crystal RosalesMarriage & Family Therapist1427700186
  27. Jennifer RosalesBehavior Technician1225986672
  28. Jocelyn RosalesBehavior Technician1407797012
  29. John RosalesBehavior Technician1225810013
  30. Magdiel RosalesBehavior Technician1629757216
  31. Maria RosalesBehavior Technician1942034228
  32. Nellie RosalesBehavior Technician1275313629
  33. Nicholas RosalesBehavior Technician1114846201
  34. Paola RosalesBehavior Technician1770209090
  35. Sarah RosaniaBehavior Technician1346132818
  36. Alma RosarioBehavior Technician1679439467
  37. Ashanti RosarioBehavior Technician1962286799
  38. Cristina RosarioBehavior Technician1649044280
  39. Karli RosarioBehavior Analyst1538915061
  40. Leilany RosarioBehavior Technician1801598891
  41. Salette RosarioBehavior Technician1063349843
  42. Alejandro RosasBehavior Technician1245103647
  43. Bryant RosasBehavior Technician1386482099
  44. Giselle RosasBehavior Technician1740962687
  45. Jennifer RosasBehavior Technician1629963962
  46. Julissa RosasBehavior Technician1861379778
  47. Linsey RosasBehavior Technician1811641996
  48. Virginia RosasBehavior Technician1427946771
  49. Lindsay RosatiBehavior Technician1710872056
  50. Aniya RoseBehavior Technician1225977671

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.