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 190 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. Savannah MariscalBehavior Technician1497639314
  2. Jing Mark, PHARM. D.Pharmacist1861712416
  3. Lindsay MarkhamBehavior Technician1528956877
  4. Ross MarkhartBehavior Technician1508576752
  5. Brandy MarkidisBehavior Technician1528903549
  6. Arnaja MarksBehavior Technician1316663305
  7. Cereza MarksBehavior Technician1093594137
  8. Madisyn MarksBehavior Technician1023845237
  9. Rachael MarksBehavior Technician1578291837
  10. Shanika MarksBehavior Technician1396461620
  11. Shatara MarksBehavior Technician1063111953
  12. Luzegnis MarlinBehavior Technician1598605164
  13. Jensy MarmolBehavior Technician1568177665
  14. Alicia MarquezBehavior Technician1841948825
  15. Allenmyer MarquezBehavior Technician1467177428
  16. Ana MarquezBehavior Technician1053239624
  17. Claudia MarquezBehavior Technician1700772837
  18. Erika MarquezBehavior Technician1841947330
  19. Harkiran MarquezCertified Registered Nurse Anesthetist1558712968
  20. Ian MarquezBehavior Technician1780469494
  21. Isabella MarquezBehavior Technician1760249262
  22. Jessica MarquezBehavior Technician1801606025
  23. Leticia MarquezBehavior Technician1740012228
  24. Makenzi MarquezBehavior Technician1518686633
  25. Marc MarquezBehavior Technician1891478707
  26. Mia MarquezBehavior Technician1194410159
  27. Paula MarquezBehavior Technician1245984251
  28. Ruby MarquezBehavior Technician1154245678
  29. Serena MarquezBehavior Technician1376438614
  30. Stella MarquezBehavior Technician1699244798
  31. Sydney MarquezBehavior Technician1083306658
  32. Acacia Marquez-WilsonBehavior Technician1013613223
  33. Rubid MarquinaBehavior Technician1720814734
  34. Bridget MarquisBehavior Technician1699630566
  35. Jasmine MarquisBehavior Technician1144954702
  36. Samantha MarquisBehavior Technician1568335503
  37. Joslyn MarraBehavior Technician1518781616
  38. Joseph MarreroBehavior Technician1336905660
  39. Sandra MarreroBehavior Technician1265269336
  40. Sandro MarreroBehavior Technician1700500238
  41. Shanika MarreroBehavior Technician1487396669
  42. Norah MarrinerBehavior Technician1346198207
  43. Aimee MarronBehavior Technician1700561180
  44. Zachary Marron-LibrizziBehavior Technician1871390112
  45. Alejandro MarroquinBehavior Technician1275334062
  46. Ashley MarroquinBehavior Technician1912603218
  47. Edgar MarroquinBehavior Technician1326902784
  48. Jacob MarroquinBehavior Technician1265382550
  49. Kimberly Marroquin RodriguezBehavior Technician1235073586
  50. Nataly Marroquin-ArcosBehavior Technician1639913288

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.