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 265 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. Celeste RiosBehavior Technician1912623901
  2. Cristopher RiosBehavior Technician1609795194
  3. Elizabeth RiosBehavior Technician1578495941
  4. Emilia RiosBehavior Technician1972232551
  5. Emmanuel RiosBehavior Technician1225877137
  6. Fernanda RiosBehavior Technician1770209553
  7. Jamilex RiosBehavior Technician1417682493
  8. Jennifer RiosBehavior Technician1962229575
  9. Jessica RiosBehavior Technician1295609691
  10. Jose RiosBehavior Technician1376225383
  11. Joseph RiosBehavior Technician1568297034
  12. June RiosBehavior Technician1629914791
  13. Karyme RiosBehavior Technician1215767579
  14. Lander RiosBehavior Technician1770309007
  15. Leo RiosBehavior Technician1336972553
  16. Marisa RiosBehavior Technician1336860410
  17. Mayra RiosBehavior Technician1508659764
  18. Mikaela RiosBehavior Technician1790483253
  19. Rocio RiosBehavior Technician1942088935
  20. Roseline RiosBehavior Technician1588300735
  21. Sandra RiosBehavior Technician1932852167
  22. Stephanie RiosBehavior Technician1033944772
  23. Miriam Rios GonzalezBehavior Technician1043050446
  24. Jennifer Rios-Zambrano, ED.D, LMFTMarriage & Family Therapist1235966631
  25. Jerry RischBehavior Technician1518764174
  26. Tiffany RisherBehavior Technician1932835576
  27. Shant RisingStudent in an Organized Health Care Education/Training Program1972160836
  28. Talia RisleyBehavior Technician1790612216
  29. Tracy RitaccoBehavior Technician1700668597
  30. Mariana RitchieBehavior Technician1790465508
  31. Tess RitchieBehavior Technician1659114536
  32. Melanie RittierodtBehavior Technician1902557937
  33. Sindulfo RivadeneiraBehavior Technician1124985130
  34. Isabel RivadeneyraBehavior Technician1770371510
  35. Sofia RivardBehavior Technician1154161024
  36. Alicia RivasBehavior Technician1407686843
  37. Ashley RivasBehavior Technician1336888221
  38. Axel RivasBehavior Technician1629877071
  39. Destiny RivasBehavior Technician1316895766
  40. Giselle RivasBehavior Technician1386528206
  41. Ingrid RivasBehavior Technician1356290845
  42. Jessy RivasBehavior Technician1790577203
  43. Joseph RivasBehavior Technician1972297638
  44. Lauren Rivas, NONEBehavior Technician1013642024
  45. Lori RivasBehavior Technician1326871328
  46. Madison RivasBehavior Technician1962323907
  47. Marlinda RivasBehavior Technician1144108861
  48. Susan RivasBehavior Technician1801313598
  49. Natalia Rivas AlvarezBehavior Technician1538875604
  50. Katherine Rivas-ContrerasBehavior Technician1346077419

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.