NPPES file of Aug 9, 2026

Doctors and health care providers in El Segundo, CA

5,178 individual NPPES records list a practice address in El Segundo, 31st of 812 California cities. The largest group is behavior technician: 4,467, 86% of the city's records, against 18% across California. Page 57 of 104.

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

The 8 largest groups in El Segundo

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

El Segundo in California

  • Rank in California31st of 812 cities by records
  • Share of the state0.5% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups90.3% of all records
  • Behavior Technician rank6th of the 10 California cities with the most

Compared with California as a whole, El Segundo has 4.9× the state's share of behavior technician records and 0.11× its share of marriage & family therapist records.

Providers in El Segundo, alphabetically

  1. Malena MarelliBehavior Technician1669295432
  2. Ariana MarezBehavior Technician1578435483
  3. Ashley MarianoBehavior Technician1629823463
  4. Andrew MarinBehavior Technician1144157454
  5. Daniella MarinBehavior Technician1710798913
  6. Lesly MarinBehavior Technician1588487532
  7. Farrah MarinoBehavior Technician1780403527
  8. Ofelia MariscalBehavior Technician1780545566
  9. Odessa MarkelBehavior Technician1528950102
  10. John MarksBehavior Technician1699668442
  11. Chase MarkytanBehavior Technician1366080616
  12. Roy Marlow, DDSGeneral Practice Dentistry1750370250
  13. Anaid MarquezBehavior Technician1821867334
  14. Ashley MarquezBehavior Technician1184493272
  15. Francisca MarquezSchool Counselor1215897632
  16. Gabriella MarquezBehavior Technician1225893522
  17. Gladis MarquezBehavior Technician1306634878
  18. Liliana MarquezBehavior Technician1386467157
  19. Martha MarquezBehavior Technician1780453324
  20. Paulina MarquezBehavior Technician1598578783
  21. Salma MarquezBehavior Technician1306616248
  22. Martin Marquez-WilsonBehavior Technician1548038482
  23. Michael Marrero, M.D.Diagnostic Radiology Physician1346288669
  24. Robert Marriott, MDSurgery Physician1700804887
  25. Diana MarronBehavior Technician1972392272
  26. Jeffrey Marshak, O.D.Optometrist1225165590
  27. Dante MarshallBehavior Technician1053269993
  28. Lillian MarshallBehavior Technician1699531178
  29. Jose MarthaBehavior Technician1316817059
  30. Brian MartinBehavior Technician1619789146
  31. Chloe MartinBehavior Technician1679323000
  32. Kalista MartinBehavior Technician1659119055
  33. Kaylia MartinBehavior Technician1619837028
  34. Matthew MartinBehavior Technician1093573792
  35. Charles Martineau, M.D.Internal Medicine Physician1225099591
  36. Adriana MartinezBehavior Technician1841099652
  37. Analidia MartinezBehavior Technician1407600299
  38. Angelica MartinezBehavior Technician1740045145
  39. Brianna MartinezBehavior Technician1255173878
  40. Charlie MartinezBehavior Technician1164277463
  41. Divine MartinezBehavior Technician1548064744
  42. Fernando MartinezBehavior Technician1245056845
  43. Giselle MartinezBehavior Technician1821968058
  44. Gisselle MartinezBehavior Technician1629943428
  45. Graciela MartinezBehavior Technician1083459317
  46. Haley MartinezBehavior Technician1336994714
  47. Jennifer MartinezBehavior Technician1437973344
  48. Jonathan MartinezBehavior Technician1720626070
  49. Keiri MartinezBehavior Technician1306653308
  50. Kevin MartinezBehavior Technician1417637018

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

El Segundo, California appears in the CMS National Plan and Provider Enumeration System with 5,178 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 El Segundo - 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 El Segundo 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 El Segundo is weighted toward Behavior Technician (4,467 clinicians, followed by Behavior Analyst with 146 and Physical Therapist with 62). 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, El Segundo reports roughly 13.3 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a El Segundo practice address, a coverage gap El Segundo patients typically fill by traveling to a larger nearby hub.

For El Segundo 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 El Segundo, CA?

There are 5,178 registered healthcare providers in El Segundo, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in El Segundo?

The most common specialties in El Segundo are Behavior Technician, Behavior Analyst, Physical Therapist, Diagnostic Radiology Physician, Marriage & Family Therapist. Behavior Technician has the most providers with 4,467.

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.